Qwen3.5-2B-CorpusClassifier

A KETI-NLP document classifier for fast, offline, single-pass multi-label routing of text corpora. It predicts 33 root domains, 1,029 selectable subject codes (broad and specific), and document states from a supplied text window.

Model ID: KETI-NLP/Qwen3.5-2B-CorpusClassifier
Companion code: https://github.com/KETI-NLP/corpus-classifier

The model can also be used from a local copy with the companion Python package. This is an independently trained derivative, not an official Qwen release.

Model details

Property	Value
Base	Qwen/Qwen3.5-2B
Base revision	15852e8c16360a2fea060d615a32b45270f8a8fc
Adaptation	LoRA plus a trained joint sequence-classification head
Output layout	33 root + 1,029 exact + 1,029 auxiliary primary + 9 state logits = 2,100
Head weight shape	2,100 × 2,048
Pooling	Last non-pad token, pooled before the linear head
Input	Cleaned metadata + supplied body window, first 768 tokens
Inference	CUDA bfloat16; one encoding per supplied window
Default batch	32 documents per GPU
Root / exact thresholds	0.5 / 0.95
Packaging	Full original base + unmerged LoRA and trained head, safetensors

The language tags identify documented example/validation languages; they do not establish equivalent quality for all languages supported by the base model.

Taxonomy: codes, names and definitions / 라벨 체계

The 1,029 selectable subject codes include all 33 root-domain codes plus 996 intermediate or more specific codes. They are not 1,029 leaf-only labels. The model's exact head can select broad or specific nodes; the separate 33-output root head gates domain membership. A document can receive multiple labels from one or more domains. The published names and definitions establish the intended scope; they do not establish equal or verified accuracy for every code.

모델이 출력한 SUB.… 코드를 해석하려면 아래 전체 목록이나 정의 문서를 확인하세요. 상위 분야와 세부 주제의 이름·정의·경계 기준을 제공하며, 원본에 한국어가 없는 항목은 영어 이름과 정의를 그대로 사용합니다.

• On this model card: the 33-domain table below and the expandable complete 1,029-code list at the end.
• Complete definitions for all 1,029 codes: code, name, parent, root, hierarchy, full definition, inclusion/exclusion guidance and head indices.
• CSV for search and spreadsheets: one row per selectable code, including the original full prompt_definition.
• Frozen machine-readable catalog and output order remain the source of truth.

The 33 root domains

Root code	한국어 이름	English name	Selectable codes, including the root itself
SUB.AGRICULTURE	농업과 식품	Agriculture and food	30
SUB.ARTS_DESIGN	예술과 디자인	Arts and design	34
SUB.BUSINESS_MANAGEMENT	경영과 조직	Business and management	56
SUB.CHEMISTRY	화학	Chemistry	20
SUB.COMPUTING	컴퓨팅과 소프트웨어	Computing and software	31
SUB.DAILY_LIFE	생활과 실용	Daily life and practical living	65
SUB.DATA_AI	데이터와 인공지능	Data and artificial intelligence	61
SUB.EARTH_SPACE	지구와 우주	Earth and space sciences	21
SUB.ECONOMY	경제와 금융	Economics and finance	41
SUB.EDUCATION	교육과 학습	Education and learning	38
SUB.ENERGY	에너지	Energy	19
SUB.ENGINEERING	공학과 제조	Engineering and manufacturing	23
SUB.ENVIRONMENT	환경과 지속가능성	Environment and sustainability	22
SUB.GENERAL	일반 지식과 참고	General knowledge and reference	22
SUB.GEOGRAPHY_CARTOGRAPHY	—	Geography and cartography	24
SUB.HEALTH	보건과 의학	Health and medicine	39
SUB.HISTORY	역사와 지역 연구	History and area studies	26
SUB.HUMANITIES	인문학	Humanities	16
SUB.INFORMATION_SCIENCE	정보학과 문헌정보	Information science and library studies	18
SUB.LANGUAGE_LINGUISTICS	언어와 언어학	SUB.LANGUAGE_LINGUISTICS	17
SUB.LAW	법과 제도	Law and legal systems	37
SUB.LIFE_SCIENCE	생명과학	Life sciences	22
SUB.LITERATURE	문학	SUB.LITERATURE	39
SUB.MATH_STATS	수학과 통계	Mathematics and statistics	17
SUB.MEDIA_COMM	미디어와 커뮤니케이션	Media and communication	48
SUB.MUSIC	음악	Music	38
SUB.NATURAL_SCIENCES	자연과학 종합	Natural sciences aggregate	26
SUB.PHYSICS	물리학	Physics	20
SUB.POLITICS	정치와 행정	Politics and public administration	22
SUB.RELIGION	종교와 신앙	Religion and belief	47
SUB.SOCIETY	사회와 문화	Society and culture	21
SUB.SPORTS_RECREATION	스포츠와 여가	Sports and recreation	36
SUB.TRANSPORT_MOBILITY	—	Transportation and mobility	33

The counts sum to 1,029; each count includes that domain's root code. Parent codes and child codes coexist in the vocabulary. The decoder removes ancestor/descendant redundancy within a selected domain, so vocabulary membership does not imply that both will appear in a single prediction.

Examples of actual label definitions

These are verbatim entries from the frozen catalog, not new label definitions:

SUB.DATA_AI.MACHINE_LEARNING

SUB.DATA_AI.MACHINE_LEARNING - Machine learning
Korean label: 기계학습
Definition: A broad subject area for machine learning concepts and methods when the item is not specific enough for model architecture, dataset split, evaluation, MLOps, or AI governance codes.
Include when: machine learning; supervised learning; unsupervised learning; reinforcement learning; prediction; model method
Exclude/demote when: Prefer more specific SUB.DATA_AI codes when evidence points to architecture, training data, evaluation, generative AI, embeddings, MLOps, or AI safety.
Classifier signals: machine learning; classifier; regression model; prediction; feature; training; inference; loss

SUB.AGRICULTURE.AGRICULTURAL_ENGINEERING_MACHINERY.FARM_MACHINERY_OPERATION_MAINTENANCE

SUB.AGRICULTURE.AGRICULTURAL_ENGINEERING_MACHINERY.FARM_MACHINERY_OPERATION_MAINTENANCE - Farm machinery operation and maintenance
Definition: A project-original subject code for farm machinery manuals, implement settings, calibration, maintenance, repair, safety, and operation notes. Use it when the item is primarily about this subject, and keep form, medium, function, provenance, rights, audience, language, time, and geography evidence in their own facets.
Include when: tractor; implement; calibration; farm machinery; maintenance
Exclude/demote when: consumer vehicle owner manual
Classifier signals: tractor; implement; calibration; farm machinery; maintenance

SUB.HEALTH

SUB.HEALTH - Health and medicine
Korean label: 보건과 의학
Korean definition: 인체 건강 질병 진단 치료 공중보건을 다루는 주제 계열.
Definition: A subject family for human health disease diagnosis treatment and public health.
Include when: medicine; disease; clinical care; public health
Exclude/demote when: 기초 생명 현상은 SUB.LIFE_SCIENCE 사용
Classifier signals: patient; diagnosis; treatment; clinical; trial

Logit order and code lookup

Joint-logit slice (Python, end-exclusive)	Meaning	How to interpret it
0:33	Root-domain logits	label_order["roots"]
33:1062	1,029 selectable subject-code logits	label_order["exact"]
1062:2091	Auxiliary primary preference over the same 1,029 codes	Not a fallback or certified primary label
2091:2095	Integrity	boilerplate, coherent, fragment, stitched
2095:2098	Topic structure	indeterminate, multi_topic, single_topic
2098:2100	Labelability	insufficient_evidence, labelable

Use decode_logits or the companion classifier rather than a single softmax across all 2,100 logits. To look up a prediction after the explicit model download:

import json
from pathlib import Path

model_dir = Path("models/corpus-classifier")
catalog = json.loads((model_dir / "taxonomy/taxonomy_catalog.json").read_text())
code = "SUB.DATA_AI.MACHINE_LEARNING"  # or a code from results[0]["exact"]
print(catalog[code]["label"])
print(catalog[code]["parent"])
print(catalog[code]["prompt_definition"])

Repository contents and loading requirements

config.json                         Custom config and AutoClass mapping
model-0000*-of-00003.safetensors      Full unmerged model state, three shards
model.safetensors.index.json         Standard weight-to-shard index
tokenizer*.json, chat_template.jinja Frozen training tokenizer
configuration_corpus_classifier.py  Transformers custom configuration
modeling_corpus_classifier.py       Transformers sequence-classification model
corpus_processing.py                Frozen input formatting and joint decoding
head_config.json                    Frozen joint-head layout
classifier_config.json              Companion CLI inference contract
taxonomy/                           Frozen code definitions and label order
docs/label-reference.md             Complete human-readable label definitions
docs/labels.csv                     All 1,029 codes, definitions and indices
training_summary.json               Aggregate recipe; no training documents
evaluation/                         Aggregate historical evaluation evidence
MODEL_MANIFEST.json                 Runtime payload SHA256 and byte lengths
licenses/                           Original base and custom-code Apache-2.0
LICENSE                             CC BY 4.0 notice for project contributions
BASE_MODEL_CARD.md                  Original base model card

Version 0.2.0 uses standard Transformers save_pretrained sharded safetensors and custom PretrainedConfig / PreTrainedModel classes registered for AutoClass loading. All required base, unmerged LoRA and classifier weights are stored at the repository root. Loading does not fetch a separate base model. The original 49 trained FP32 tensors are retained exactly; CUDA BF16 inference also reproduces the original floating-buffer conversion. An unused PEFT original-head tensor is stored as zeros and is not used for predictions.

Direct AutoClass loading requires trust_remote_code=True because this repository supplies the custom model implementation. The companion GitHub CLI uses its locally installed class, validates matching source hashes, and does not execute downloaded Python code. The old nested-bundle layout remains available at tag v0.1.0; use companion code v0.2.0 for this new layout.

The 2,100 logits combine different heads. A generic pipeline("text-classification") softmax or sigmoid does not reproduce the final taxonomy decisions. Use prepare_inputs, model forward, and decode_logits as shown below. This is a text classifier, not a chat/generation endpoint; automatic hosted inference/widget support is not claimed.

Direct Transformers use

Install a driver-compatible CUDA build of PyTorch and the tested transformers==5.11.0, peft==0.19.0. No companion GitHub package is required for this example. Replace MODEL_COMMIT with the immutable 40-character commit of this release from Files and versions (or the companion docs/release.json).

import torch
from transformers import AutoTokenizer, AutoModelForSequenceClassification

repo = "KETI-NLP/Qwen3.5-2B-CorpusClassifier"
revision = "MODEL_COMMIT"  # immutable release commit

tokenizer = AutoTokenizer.from_pretrained(
    repo, revision=revision, trust_remote_code=True,
)
model = AutoModelForSequenceClassification.from_pretrained(
    repo, revision=revision, trust_remote_code=True,
    dtype=torch.bfloat16,
).to("cuda").eval()

batch = model.prepare_inputs(
    tokenizer,
    ["토양 수분과 관개가 작물 생장에 미치는 영향"],
    metadata=[{"language": "ko"}],
).to("cuda")
with torch.inference_mode(), torch.autocast("cuda", dtype=torch.bfloat16):
    logits = model(**batch).logits.float().cpu()  # [batch, 2100]
results = model.decode_logits(logits, sample_ids=["example-1"])
print(results[0]["roots"], results[0]["exact"])

save_pretrained is supported for model/config export. Saving after a BF16 load changes original FP32 trained-tensor storage to BF16; it is not an exact copy of the published checkpoint. That method does not copy auxiliary CLI taxonomy/manifest files. Direct decode_logits returns labels and scores; use the companion API/CLI below for input hashes, token/truncation diagnostics, resumable jobs and Parquet exports.

Quick start

Install the companion code and download a pinned model revision:

git clone https://github.com/KETI-NLP/corpus-classifier.git
cd corpus-classifier
python -m pip install '.[hub,data]'

# Replace MODEL_COMMIT with the full 40-character commit of this model release.
corpus-classifier download \
  --repo-id KETI-NLP/Qwen3.5-2B-CorpusClassifier \
  --revision MODEL_COMMIT \
  --output models/corpus-classifier

Install a PyTorch CUDA build compatible with your driver first. Tested runtime: Python 3.11.14, torch 2.11.0+cu130, transformers 5.11.0, peft 0.19.0. Complete package versions are in environment.lock.json and the companion project configuration.

from corpus_classifier import Classifier

classifier = Classifier("models/corpus-classifier", device="cuda:0")
results = classifier.predict([
    {"sample_id": "example-1",
     "text_window": "토양 수분과 관개가 작물 생장에 미치는 영향",
     "metadata_compact": {"language": "ko"}}
])
print(results[0]["roots"], results[0]["exact"])

For large corpora, keep one model instance per GPU and reuse it across batches:

corpus-classifier prepare --input documents.jsonl --output jobs/run-001
corpus-classifier run \
  --manifest jobs/run-001/manifest.json \
  --model models/corpus-classifier \
  --output outputs/run-001 --devices 0,1,2,3,4,5,6,7

Rerun the same command to resume; completed shards are checked and skipped. See the companion README for schema, compressed input, Parquet export, and operating limits. After the explicit download, classification requires no API calls or network access.

Input and output semantics

Required input fields are a unique nonempty sample_id string and a nonempty text_window string. Optional metadata is restricted to title, language, date, publisher and format family. Source locators and upstream labels are not model features.

The classifier returns multiple root/fine labels, selected-label scores, auxiliary primary preference, and three document-state predictions:

• integrity: boilerplate, coherent, fragment, stitched;
• topic structure: indeterminate, multi_topic, single_topic;
• labelability: insufficient_evidence, labelable.

Decoding applies the root gate and removes ancestor/descendant redundancy within the selected fine labels. No exact label is forced when none passes the threshold. Scores retain the historical *_probabilities field names but are not calibrated probabilities of correctness. auxiliary_primary is not a fallback ground-truth label.

Outputs also report input/visible token counts, truncation, empty exact-label sets, input hashes, and optional source references. truncated=false only means the supplied input fits the limit; it does not establish that an upstream full document was preserved. This release does not quote label evidence or certify exhaustive topic coverage.

Training data and evidence-preserving supervision

This is the fixed final checkpoint from the 2B size-comparison training run. It was trained on 82,272 exposed rows representing 45,363 distinct normalized bodies, with a separate development set of 3,084 rows. Repeated rows reflect the fixed training exposure schedule, not additional independent documents.

Supervision mixes legacy weak primary preference, root supervision, existing exact supervision, and 1,130 unique bodies with the explicit retained-input masking policy. Do not describe the whole training set as having been regenerated under the strict evidence-preservation procedure.

For the explicitly audited window subset:

1. Independent label judgments are checked for agreement, confidence, literal evidence and per-root review scope.
2. A positive label is retained only when all tokens overlapping its cited evidence survive in the actual model input, including multi-token representations of a character.
3. Other labels in a root become negatives only when that root passes the complete-scope conditions, the full supplied input is retained, and all positive evidence for that root is retained.
4. Unobserved labels remain masked out of the loss. A truncated positive is never converted into a negative.
5. Before training, non-padding token-ID hashes, token counts and the maximum input length are checked against the stored mask contract.

One adopted 66-document tranche supplied 88 exact-positive and 1,976 exact-negative pairs, while 65,850 fine-label positions remained unknown. This is an example within the larger mixture, not the total supervision count. The mechanism is used in actual training; its isolated improvement in classification accuracy has not been established by this release.

Training examples, document-level judgments and private source records are not distributed. Normalized-body identity checks are not semantic deduplication. Training/development identities and the historical frozen judgments were preserved; independent confirmation was not used for training or checkpoint fitting.

Training recipe

Parameter	Value
Initialization	Published Qwen3.5-2B base, fresh LoRA and classifier head
LoRA	rank 32, alpha 64, dropout 0.05; q/k/v/o projections
Epochs / optimizer updates	3 / 966
Checkpoint selection	Fixed final epoch 3
Seed	1567
GPUs / local batch / gradient accumulation	8 / 16 / 2
LoRA learning rate / head learning rate	2e-5 / 5e-4
Precision	FP32 master parameters, BF16 forward
Maximum input length	768 tokens

Objectives include masked root/exact multi-label losses, auxiliary primary preference and document-state losses. Scoped negative loss additions preserve the existing positive-gradient normalization. The refactor and packaging performed no retraining, weight merging, quantization or threshold tuning.

Evaluation and selection

On the 17-document complete-consensus subset of independent confirmation:

Model	Precision	Recall	Micro-F1
This 2B classifier, threshold 0.95	45.16%	58.33%	50.91%
Compared 9B candidate, threshold 0.7	41.18%	58.33%	48.28%

The minimum planned sample size was 20 complete documents, so the decision was inconclusive; retain the incumbent. The small, model-consensus-selected subset is not human gold, population accuracy, or evidence of statistically significant 2B superiority. The original confirmation set is now used and must not be represented as an unused holdout.

Throughput and engineering validation

The historical 8×B200 operational runner processed 100,000 prepared input documents in 100.73 seconds, approximately 993 documents/second. That measurement includes model loading, checks, input reading, inference and output saving for that job; it excludes full upstream raw-corpus extraction. Its empty-exact rate was 15.64% and token-truncation rate was 45.61%. A separate source-biased small-file workload had a 38.87% empty-exact rate, demonstrating source sensitivity.

This historical throughput is not a fresh full-scale benchmark of the refactored CLI or a throughput guarantee on other devices. Refactor-specific equivalence, synthetic GPU smoke, and recovery tests are recorded in the companion code repository's docs/validation.json. The v0.2.0 native AutoClass export reproduced the original tokens and logits exactly on three synthetic inputs, including a long truncated input; that was a loading-equivalence test, not a quality evaluation.

Intended use and limitations

• First-pass candidate routing for corpus curation, downstream deduplication, and domain-mixture experiments.
• Inspect source/language-specific behavior and keep unclassified/windowed records available for follow-up.
• Fine-label frequencies are predictions, not verified domain proportions or optimal training mixture weights.
• A 768-token window may omit other topics in long or heterogeneous web documents. Multi-window union decoding was not adopted or validated as this model's default.
• No verified per-code performance guarantee exists for all 1,029 labels or every language.
• Absence from the selected labels is not a reviewed negative. Do not bootstrap new training truth from predictions without separate validation.
• Restricting deduplication to same-label pairs can miss cross-label or unclassified duplicates.
• The base model's native context length, vision support, generation benchmarks and multilingual claims do not transfer to this specialized classifier's tested scope.

Licenses and attribution

KETI-NLP contributions — the trained LoRA/classification head, taxonomy metadata and project documentation — are released under CC BY 4.0, see LICENSE. Attribute KETI-NLP and this release, retain the license link, and indicate modifications.

Original Qwen3.5-2B base files remain under Apache-2.0, preserved in licenses/BASE-APACHE-2.0.txt. The original base model card is retained in BASE_MODEL_CARD.md. The top-level license: cc-by-4.0 identifies the additional project contributions; it does not replace the base license.

The custom Python files in this model repository and the companion classifier source code are Apache-2.0; see the code license. No rights in undistributed source corpora are granted by this release.

Reproducibility and references

Use an immutable Hub commit and verify MODEL_MANIFEST.json. Hashes detect changes but are not digital signatures. Model and taxonomy payloads must remain unchanged during a running job.

• Original Qwen3.5-2B model card

• Hugging Face model-card metadata

• Downloading a pinned model snapshot

• Transformers custom model and AutoClass registration

Complete selectable label list / 전체 1,029개 라벨 목록

Expand a domain to see every selectable code and its original English name. The full code encodes its hierarchy; the explicit parent, full definition, inclusion/exclusion guidance and head indices are in the complete label reference. Download the CSV for filtering or spreadsheet use. Each domain count includes its root code. All 1,029 entries below follow the frozen exact-head order.

Agriculture and food / 농업과 식품 — 30 codes

Exact index	Code	Name
0	SUB.AGRICULTURE	Agriculture and food
1	SUB.AGRICULTURE.AGRICULTURAL_ENGINEERING_MACHINERY	Agricultural engineering machinery and farm infrastructure
2	SUB.AGRICULTURE.AGRICULTURAL_ENGINEERING_MACHINERY.FARM_MACHINERY_OPERATION_MAINTENANCE	Farm machinery operation and maintenance
3	SUB.AGRICULTURE.AGRICULTURAL_SCIENCE_SYSTEMS	Agricultural science and systems
4	SUB.AGRICULTURE.ANIMAL_BREEDING_HUSBANDRY	Animal breeding husbandry and livestock systems
5	SUB.AGRICULTURE.ANIMAL_BREEDING_HUSBANDRY.LIVESTOCK_FEEDING_HERD_RECORDS	Livestock feeding and herd records
6	SUB.AGRICULTURE.ANIMAL_PRODUCTS_DAIRY	Animal products dairy and farm product handling
7	SUB.AGRICULTURE.APICULTURE_INSECT_CULTURE	Apiculture insect culture and managed arthropods
8	SUB.AGRICULTURE.CROPS_SOIL	Crops and soil
9	SUB.AGRICULTURE.CROP_PRODUCTION_AGRONOMY	Crop production agronomy and field operations
10	SUB.AGRICULTURE.CROP_PRODUCTION_AGRONOMY.FIELD_OPERATION_RECORDS	Crop field operation records
11	SUB.AGRICULTURE.FARM_MANAGEMENT_AGRIC_ECONOMICS	Farm management and agricultural economics
12	SUB.AGRICULTURE.FIELD_CROPS_FORAGE_INDUSTRIAL	Field crops forage and industrial crops
13	SUB.AGRICULTURE.FISHERIES_AQUACULTURE_WILDLIFE	Fisheries aquaculture and managed aquatic resources
14	SUB.AGRICULTURE.FISHERIES_AQUACULTURE_WILDLIFE.AQUACULTURE_FARM_MANAGEMENT	Aquaculture farm management
15	SUB.AGRICULTURE.FOOD_PROCESSING_PRESERVATION	Food processing preservation and agricultural products
16	SUB.AGRICULTURE.FOOD_PROCESSING_PRESERVATION.FOOD_PROCESSING_RECIPE_SCALE_UP	Food processing recipe scale up
17	SUB.AGRICULTURE.FOOD_SYSTEMS	Food systems
18	SUB.AGRICULTURE.FOOD_SYSTEMS.FOOD_SAFETY_TRACEABILITY_RECORDS	Food safety and traceability records
19	SUB.AGRICULTURE.FORESTRY_FISHERIES	Forestry and fisheries
20	SUB.AGRICULTURE.FORESTRY_SILVICULTURE_PRODUCTS	Forestry silviculture and forest products
21	SUB.AGRICULTURE.FORESTRY_SILVICULTURE_PRODUCTS.FOREST_MANAGEMENT_HARVEST_PLANS	Forest management harvest plans
22	SUB.AGRICULTURE.HORTICULTURE_ORCHARDS_GARDEN_CROPS	Horticulture orchards vegetables and specialty crops
23	SUB.AGRICULTURE.LIVESTOCK	Livestock
24	SUB.AGRICULTURE.PLANT_PROTECTION_PESTS_DISEASE	Plant protection pests and crop disease
25	SUB.AGRICULTURE.PLANT_PROTECTION_PESTS_DISEASE.CROP_DISEASE_PEST_ADVISORIES	Crop disease and pest advisories
26	SUB.AGRICULTURE.SOIL_WATER_FERTILITY	Soil water fertility and plant nutrition
27	SUB.AGRICULTURE.SOIL_WATER_FERTILITY.SOIL_TEST_FERTILIZER_RECOMMENDATIONS	Soil test fertilizer recommendations
28	SUB.AGRICULTURE.VETERINARY_FARM_ANIMAL_HEALTH	Veterinary and farm animal health
29	SUB.AGRICULTURE.VETERINARY_FARM_ANIMAL_HEALTH.FARM_ANIMAL_TREATMENT_RECORDS	Farm animal treatment records

Arts and design / 예술과 디자인 — 34 codes

Exact index	Code	Name
30	SUB.ARTS_DESIGN	Arts and design
31	SUB.ARTS_DESIGN.ARCHITECTURE	Architecture
32	SUB.ARTS_DESIGN.ARCHITECTURE.HERITAGE_CONSERVATION_RESTORATION	Architectural heritage conservation and restoration
33	SUB.ARTS_DESIGN.ARCHITECTURE.RESIDENTIAL_BUILDING_DESIGN	Residential and building design
34	SUB.ARTS_DESIGN.ARTS_FOUNDATIONS	Arts foundations
35	SUB.ARTS_DESIGN.ART_THEORY_HISTORY	Art theory history and criticism
36	SUB.ARTS_DESIGN.ART_THEORY_HISTORY.ART_CRITICISM_INTERPRETATION	Art criticism and interpretation
37	SUB.ARTS_DESIGN.ART_THEORY_HISTORY.MUSEUMS_CURATORSHIP_EXHIBITION_STUDIES	Museums curatorship and exhibition studies
38	SUB.ARTS_DESIGN.CALLIGRAPHY	Calligraphy and lettering arts
39	SUB.ARTS_DESIGN.CRAFTS_APPLIED_ARTS	Crafts and applied arts
40	SUB.ARTS_DESIGN.CRAFTS_APPLIED_ARTS.CERAMICS_GLASS_WOODWORK	Ceramics glass and woodwork
41	SUB.ARTS_DESIGN.CRAFTS_APPLIED_ARTS.TEXTILE_FASHION_CRAFTS	Textile fashion and wearable crafts
42	SUB.ARTS_DESIGN.DESIGN	Design
43	SUB.ARTS_DESIGN.DESIGN.GRAPHIC_COMMUNICATION_DESIGN	Graphic and communication design
44	SUB.ARTS_DESIGN.DESIGN.PRODUCT_SERVICE_DESIGN	Product and service design
45	SUB.ARTS_DESIGN.LANDSCAPE_URBAN_DESIGN	Landscape and urban design
46	SUB.ARTS_DESIGN.LANDSCAPE_URBAN_DESIGN.PUBLIC_SPACE_PLACEMAKING	Public space landscape and placemaking
47	SUB.ARTS_DESIGN.MEDIA_ARTS	Media arts
48	SUB.ARTS_DESIGN.MEDIA_ARTS.DIGITAL_INTERACTIVE_ART	Digital and interactive art
49	SUB.ARTS_DESIGN.MEDIA_ARTS.GAME_ART_ANIMATION_DESIGN	Game art and animation design
50	SUB.ARTS_DESIGN.PAINTING_DRAWING	Painting and drawing
51	SUB.ARTS_DESIGN.PAINTING_DRAWING.DRAWING_ILLUSTRATION	Drawing and illustration practice
52	SUB.ARTS_DESIGN.PAINTING_DRAWING.PAINTING_TECHNIQUES_STYLES	Painting techniques and styles
53	SUB.ARTS_DESIGN.PERFORMING_ARTS	Performing arts
54	SUB.ARTS_DESIGN.PERFORMING_ARTS.STAGE_PRODUCTION_SCENOGRAPHY	Stage production and scenography
55	SUB.ARTS_DESIGN.PERFORMING_ARTS.THEATRE_DANCE_PERFORMANCE_PRACTICE	Theatre, dance, and performance practice
56	SUB.ARTS_DESIGN.PHOTOGRAPHY_FILM	Photography and film art
57	SUB.ARTS_DESIGN.PHOTOGRAPHY_FILM.FILM_CINEMA_STUDIES	Film and cinema studies
58	SUB.ARTS_DESIGN.PHOTOGRAPHY_FILM.PHOTOGRAPHIC_ART_PRACTICE	Photographic art and practice
59	SUB.ARTS_DESIGN.PRINTMAKING	Printmaking
60	SUB.ARTS_DESIGN.SCULPTURE_CERAMICS_METALWORK	Sculpture ceramics and metalwork
61	SUB.ARTS_DESIGN.SCULPTURE_CERAMICS_METALWORK.THREE_DIMENSIONAL_ART_OBJECTS	Sculpture and three-dimensional art objects
62	SUB.ARTS_DESIGN.VISUAL_ARTS	Visual arts
63	SUB.ARTS_DESIGN.VISUAL_ARTS.ILLUSTRATION_COMICS_VISUAL_NARRATIVE	Illustration comics and visual narrative

Business and management / 경영과 조직 — 56 codes

Exact index	Code	Name
64	SUB.BUSINESS_MANAGEMENT	Business and management
65	SUB.BUSINESS_MANAGEMENT.ACCOUNTING	Accounting and auditing
66	SUB.BUSINESS_MANAGEMENT.ACCOUNTING.ACCOUNTS_PAYABLE_RECEIVABLE_AGING_TABLES	Accounts payable receivable aging tables
67	SUB.BUSINESS_MANAGEMENT.ACCOUNTING.EXPENSE_REIMBURSEMENT_RECEIPT_TABLES	Expense reimbursement and receipt tables
68	SUB.BUSINESS_MANAGEMENT.ACCOUNTING.FINANCIAL_REPORTING_DISCLOSURE	Financial reporting and disclosure
69	SUB.BUSINESS_MANAGEMENT.ACCOUNTING.FINANCIAL_STATEMENT_WORKPAPERS	Financial statement workpapers
70	SUB.BUSINESS_MANAGEMENT.ACCOUNTING.GENERAL_LEDGER_ACCOUNTING_TABLES	General ledger accounting tables
71	SUB.BUSINESS_MANAGEMENT.BUSINESS_ANALYTICS_DECISION_SUPPORT	Business analytics and decision support
72	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE	Commerce and trade
73	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.ECOMMERCE_PRODUCT_LISTINGS	Ecommerce product listings
74	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.INVENTORY_STOCK_CONTROL_TABLES	Inventory and stock control tables
75	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.MARKETPLACE_SELLER_OPERATIONS	Marketplace seller operations
76	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.ORDER_FULFILLMENT_RETURN_RECORDS	Order fulfillment and return records
77	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.SALES_ORDER_LINE_ITEM_TABLES	Sales order line item tables
78	SUB.BUSINESS_MANAGEMENT.COMMERCE_TRADE.SUBSCRIPTION_BILLING_MEMBERSHIP_RECORDS	Subscription billing and membership records
79	SUB.BUSINESS_MANAGEMENT.CORPORATE_GOVERNANCE_RISK_COMPLIANCE	Corporate governance risk and compliance
80	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE	Customer service and experience management
81	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CHATBOT_CUSTOMER_SERVICE_AUTOMATION	Chatbot and customer service automation
82	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CUSTOMER_SUPPORT_CASE_OPERATIONS	Customer support case operations
83	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CUSTOMER_SUPPORT_CASE_OPERATIONS.CUSTOMER_COMPLAINT_RESOLUTION_CONVERSATIONS	Customer complaint resolution conversations
84	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CUSTOMER_SUPPORT_CASE_OPERATIONS.SUPPORT_CHAT_TROUBLESHOOTING_DIALOGUES	Support chat and troubleshooting dialogues
85	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CUSTOMER_SUPPORT_CASE_OPERATIONS.SUPPORT_ESCALATION_SLA_CONVERSATIONS	Support escalation and SLA conversations
86	SUB.BUSINESS_MANAGEMENT.CUSTOMER_SERVICE_EXPERIENCE.CUSTOMER_SUPPORT_KNOWLEDGE_BASE	Customer support knowledge base
87	SUB.BUSINESS_MANAGEMENT.ENTREPRENEURSHIP_STARTUPS	Entrepreneurship and startups
88	SUB.BUSINESS_MANAGEMENT.GENERAL_MANAGEMENT	General management
89	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION	Human resources and organization
90	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.EMPLOYEE_RELATIONS_CASE_CONVERSATIONS	Employee relations case conversations
91	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.EMPLOYEE_ROSTER_DIRECTORY_TABLES	Employee roster and directory tables
92	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.HR_POLICY_EMPLOYEE_HANDBOOKS	HR Policy and Employee Handbooks
93	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.LEARNING_TRAINING_COMPLIANCE_RECORDS	Learning, training, and compliance records
94	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.RECRUITING_INTERVIEW_CONVERSATIONS	Recruiting and interview conversations
95	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.TRAINING_COMPLETION_MATRIX_TABLES	Training completion matrix tables
96	SUB.BUSINESS_MANAGEMENT.HR_ORGANIZATION.WORKPLACE_COACHING_FEEDBACK_DIALOGUES	Workplace coaching and feedback dialogues
97	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES	Marketing and sales
98	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.AFFILIATE_MARKETING_REFERRAL_CONTENT	Affiliate marketing and referral content
99	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.CAMPAIGN_PERFORMANCE_ATTRIBUTION_TABLES	Campaign performance and attribution tables
100	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.CRM_LEAD_PIPELINE_TABLES	CRM lead and pipeline tables
101	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.MARKET_RESEARCH_SURVEY_ANALYTICS	Market research and survey analytics
102	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.MARKET_RESEARCH_SURVEY_ANALYTICS.CONSUMER_SURVEY_RESPONSE_TABLES	Consumer survey response tables
103	SUB.BUSINESS_MANAGEMENT.MARKETING_SALES.SEARCH_ENGINE_MARKETING_AD_PLACEMENT	Search engine marketing and ad placement
104	SUB.BUSINESS_MANAGEMENT.OFFICE_ADMINISTRATION	Office administration and business communication
105	SUB.BUSINESS_MANAGEMENT.OPERATIONS_SUPPLY	Operations and supply chain
106	SUB.BUSINESS_MANAGEMENT.OPERATIONS_SUPPLY.MANUFACTURING_PRODUCTION_SCHEDULE_TABLES	Manufacturing production schedule tables
107	SUB.BUSINESS_MANAGEMENT.OPERATIONS_SUPPLY.PROCUREMENT_PURCHASE_ORDER_TABLES	Procurement and purchase order tables
108	SUB.BUSINESS_MANAGEMENT.OPERATIONS_SUPPLY.SUPPLIER_PERFORMANCE_SCORECARDS	Supplier performance scorecards
109	SUB.BUSINESS_MANAGEMENT.OPERATIONS_SUPPLY.SUPPLY_CHAIN_LOGISTICS_DOCUMENTATION	Supply chain and logistics documentation
110	SUB.BUSINESS_MANAGEMENT.ORGANIZATIONAL_BEHAVIOR_CHANGE	Organizational behavior and change management
111	SUB.BUSINESS_MANAGEMENT.PROCUREMENT_VENDOR_MANAGEMENT	Procurement and vendor management
112	SUB.BUSINESS_MANAGEMENT.PROCUREMENT_VENDOR_MANAGEMENT.VENDOR_ONBOARDING_RISK_REVIEW	Vendor onboarding and risk review
113	SUB.BUSINESS_MANAGEMENT.PRODUCT_MANAGEMENT_INNOVATION	Product management and innovation
114	SUB.BUSINESS_MANAGEMENT.PROJECT_PROGRAM_MANAGEMENT	Project and program management
115	SUB.BUSINESS_MANAGEMENT.PROJECT_PROGRAM_MANAGEMENT.MEETING_DECISION_ACTION_ITEM_DISCUSSIONS	Meeting decision and action item discussions
116	SUB.BUSINESS_MANAGEMENT.PROJECT_PROGRAM_MANAGEMENT.PROJECT_STATUS_STANDUP_DISCUSSIONS	Project status and standup discussions
117	SUB.BUSINESS_MANAGEMENT.PROJECT_PROGRAM_MANAGEMENT.PROJECT_TRACKER_BACKLOG_TABLES	Project tracker and backlog tables
118	SUB.BUSINESS_MANAGEMENT.PROJECT_PROGRAM_MANAGEMENT.RESOURCE_CAPACITY_PLANNING_TABLES	Resource and capacity planning tables
119	SUB.BUSINESS_MANAGEMENT.STRATEGY	Strategy

Chemistry / 화학 — 20 codes

Exact index	Code	Name
120	SUB.CHEMISTRY	Chemistry
121	SUB.CHEMISTRY.ANALYTICAL	Analytical chemistry
122	SUB.CHEMISTRY.ANALYTICAL.CHROMATOGRAPHY_SPECTRA_REPORTS	Chromatography and spectra reports
123	SUB.CHEMISTRY.BIOCHEMISTRY_CHEMICAL_BIOLOGY	Biochemistry and chemical biology
124	SUB.CHEMISTRY.CATALYSIS_REACTION_MECHANISMS	Catalysis and reaction mechanisms
125	SUB.CHEMISTRY.CHEMICAL_SCIENCE_FOUNDATIONS	Chemical science foundations
126	SUB.CHEMISTRY.COMPUTATIONAL_CHEMISTRY_CHEMINFORMATICS	Computational chemistry and cheminformatics
127	SUB.CHEMISTRY.ELECTROCHEMISTRY_ENERGY_CHEMISTRY	Electrochemistry and energy chemistry
128	SUB.CHEMISTRY.ENVIRONMENTAL_CHEMISTRY	Environmental chemistry
129	SUB.CHEMISTRY.INORGANIC	Inorganic chemistry
130	SUB.CHEMISTRY.INORGANIC.CRYSTAL_STRUCTURE_CIF_REPORTS	Crystal structure and CIF reports
131	SUB.CHEMISTRY.MATERIALS_CHEMISTRY	Materials chemistry
132	SUB.CHEMISTRY.MATERIALS_CHEMISTRY.POLYMER_NANOMATERIAL_CHARACTERIZATION	Polymer and nanomaterial characterization
133	SUB.CHEMISTRY.MEDICINAL_PHARMACEUTICAL_CHEMISTRY	Medicinal and pharmaceutical chemistry
134	SUB.CHEMISTRY.ORGANIC	Organic chemistry
135	SUB.CHEMISTRY.ORGANIC.SYNTHESIS_PROCEDURES_REACTION_SCHEMES	Synthesis procedures and reaction schemes
136	SUB.CHEMISTRY.PHYSICAL	Physical chemistry
137	SUB.CHEMISTRY.PHYSICAL.KINETICS_THERMODYNAMICS_DATA	Kinetics and thermodynamics data
138	SUB.CHEMISTRY.POLYMER_CHEMISTRY	Polymer chemistry
139	SUB.CHEMISTRY.SURFACE_COLLOID_CHEMISTRY	Surface and colloid chemistry

Computing and software / 컴퓨팅과 소프트웨어 — 31 codes

Exact index	Code	Name
140	SUB.COMPUTING	Computing and software
141	SUB.COMPUTING.ALGORITHMS_DATA_STRUCTURES	Algorithms and data structures
142	SUB.COMPUTING.APPLIED_COMPUTING	Applied computing and computer applications
143	SUB.COMPUTING.COMPILERS_RUNTIME	Compilers interpreters and runtime systems
144	SUB.COMPUTING.COMPUTER_ARCHITECTURE_HARDWARE	Computer architecture and hardware platforms
145	SUB.COMPUTING.COMPUTER_SCIENCE_FOUNDATIONS	Computer science foundations
146	SUB.COMPUTING.CYBERSECURITY	Cybersecurity
147	SUB.COMPUTING.CYBERSECURITY.SOFTWARE_SUPPLY_CHAIN_SECURITY	Software supply chain security
148	SUB.COMPUTING.DATABASE_SYSTEMS	Database systems
149	SUB.COMPUTING.DISTRIBUTED_CLOUD_SYSTEMS	Distributed cloud and platform systems
150	SUB.COMPUTING.FILE_STORAGE_SYSTEMS	File storage and persistence systems
151	SUB.COMPUTING.GRAPHICS_VISUALIZATION	Computer graphics and visualization
152	SUB.COMPUTING.HCI_INTERACTION_DESIGN	Human-computer interaction and interaction design
153	SUB.COMPUTING.OPERATING_SYSTEMS	Operating systems
154	SUB.COMPUTING.PERFORMANCE_RELIABILITY	Performance reliability and observability
155	SUB.COMPUTING.PERFORMANCE_RELIABILITY.OBSERVABILITY_LOGGING_TELEMETRY	Observability logging and telemetry
156	SUB.COMPUTING.PERFORMANCE_RELIABILITY.OBSERVABILITY_LOGGING_TELEMETRY.METRICS_ALERT_EXPORT_TABLES	Metrics, alert, and export tables
157	SUB.COMPUTING.PROGRAMMING	Programming
158	SUB.COMPUTING.PROGRAMMING_LANGUAGES	Programming languages
159	SUB.COMPUTING.SOFTWARE_ENGINEERING	Software engineering
160	SUB.COMPUTING.SOFTWARE_ENGINEERING.API_SDK_DOCUMENTATION	API and SDK documentation
161	SUB.COMPUTING.SOFTWARE_ENGINEERING.CODE_REVIEW_PATCH_ANALYSIS	Code review and patch analysis
162	SUB.COMPUTING.SOFTWARE_ENGINEERING.CODE_REVIEW_PATCH_ANALYSIS.CODE_REVIEW_THREAD_DISCUSSIONS	Code review thread discussions
163	SUB.COMPUTING.SOFTWARE_ENGINEERING.CODE_REVIEW_PATCH_ANALYSIS.PULL_REQUEST_DESIGN_RATIONALE	Pull request design rationale
164	SUB.COMPUTING.SOFTWARE_ENGINEERING.DEPENDENCY_PACKAGE_MANAGEMENT	Dependency and package management
165	SUB.COMPUTING.SOFTWARE_ENGINEERING.ISSUE_TRACKER_BUG_TRIAGE_DISCUSSIONS	Issue tracker and bug triage discussions
166	SUB.COMPUTING.SOFTWARE_ENGINEERING.ISSUE_TRACKER_BUG_TRIAGE_DISCUSSIONS.ISSUE_EXPORT_BACKLOG_TABLES	Issue export and backlog tables
167	SUB.COMPUTING.SOFTWARE_ENGINEERING.OPEN_SOURCE_MAINTAINER_COMMUNITY_DISCUSSIONS	Open source maintainer and community discussions
168	SUB.COMPUTING.SYSTEMS_NETWORKS	Systems and networks
169	SUB.COMPUTING.WEB_MOBILE_PLATFORMS	Web mobile and application platforms
170	SUB.COMPUTING.WEB_MOBILE_PLATFORMS.WEB_STRUCTURED_DATA_SEO_METADATA	Web structured data and SEO metadata

Daily life and practical living / 생활과 실용 — 65 codes

Exact index	Code	Name
171	SUB.DAILY_LIFE	Daily life and practical living
172	SUB.DAILY_LIFE.CONSUMER_GUIDES	Consumer guides
173	SUB.DAILY_LIFE.CONSUMER_GUIDES.CONSUMER_RIGHTS_SAFETY_RECALLS	Consumer rights safety and recalls
174	SUB.DAILY_LIFE.CONSUMER_GUIDES.CONSUMER_RIGHTS_SAFETY_RECALLS.RECALL_NOTICE_PRODUCT_SAFETY	Recall notice and product safety guidance
175	SUB.DAILY_LIFE.CONSUMER_GUIDES.CONSUMER_RIGHTS_SAFETY_RECALLS.WARRANTY_RETURN_POLICY_GUIDANCE	Warranty, return policy, and repair guidance
176	SUB.DAILY_LIFE.CONSUMER_GUIDES.PRODUCT_REVIEWS_BUYING_GUIDES	Product reviews and buying guides
177	SUB.DAILY_LIFE.CONSUMER_GUIDES.PRODUCT_REVIEWS_BUYING_GUIDES.PRICE_DEAL_COMPARISON	Price and deal comparison
178	SUB.DAILY_LIFE.CONSUMER_GUIDES.PRODUCT_REVIEWS_BUYING_GUIDES.PRODUCT_REVIEW_COMPARISON	Product review and comparison
179	SUB.DAILY_LIFE.CRAFTS_DIY	Crafts and DIY
180	SUB.DAILY_LIFE.CRAFTS_DIY.HANDCRAFTS_MAKING	Handcrafts and making
181	SUB.DAILY_LIFE.CRAFTS_DIY.HOME_REPAIR_MAINTENANCE_DIY	Home repair maintenance and DIY
182	SUB.DAILY_LIFE.CRAFTS_DIY.HOME_REPAIR_MAINTENANCE_DIY.DIY_REPAIR_STEP_GUIDE	DIY repair step guides
183	SUB.DAILY_LIFE.FAMILY_RELATIONSHIPS	Family and relationships
184	SUB.DAILY_LIFE.FAMILY_RELATIONSHIPS.PARENTING_CHILDCARE	Parenting and childcare
185	SUB.DAILY_LIFE.FAMILY_RELATIONSHIPS.PARENTING_CHILDCARE.CHILDCARE_SCHOOL_HOME_COMMUNICATION	Childcare and school-home communication
186	SUB.DAILY_LIFE.FAMILY_RELATIONSHIPS.PARENTING_CHILDCARE.ELDERCARE_HOME_SUPPORT	Eldercare and home support
187	SUB.DAILY_LIFE.FAMILY_RELATIONSHIPS.RELATIONSHIP_COMMUNICATION	Relationship communication and family interaction
188	SUB.DAILY_LIFE.FOOD_COOKING	Food and cooking
189	SUB.DAILY_LIFE.FOOD_COOKING.FOOD_PRESERVATION_STORAGE	Food preservation and storage
190	SUB.DAILY_LIFE.FOOD_COOKING.FOOD_PRESERVATION_STORAGE.HOME_FOOD_STORAGE_SAFETY	Home food storage safety
191	SUB.DAILY_LIFE.FOOD_COOKING.MEAL_PLANNING_KITCHEN_OPERATIONS	Meal planning and kitchen operations
192	SUB.DAILY_LIFE.FOOD_COOKING.MEAL_PLANNING_KITCHEN_OPERATIONS.MEAL_PLAN_MENU_NUTRITION	Meal plans menus and kitchen nutrition
193	SUB.DAILY_LIFE.FOOD_COOKING.MEAL_PLANNING_KITCHEN_OPERATIONS.MEAL_PREP_BATCH_COOKING	Meal prep and batch cooking
194	SUB.DAILY_LIFE.FOOD_COOKING.RECIPES_COOKBOOKS	Recipes and cookbooks as practical subject
195	SUB.DAILY_LIFE.FOOD_COOKING.RECIPES_COOKBOOKS.RECIPE_INSTRUCTION_RECORD	Recipe instruction records
196	SUB.DAILY_LIFE.FOOD_COOKING.RECIPES_COOKBOOKS.RECIPE_INSTRUCTION_RECORD.DIETARY_RESTRICTION_RECIPE	Dietary restriction recipes
197	SUB.DAILY_LIFE.FOOD_COOKING.RECIPES_COOKBOOKS.RECIPE_INSTRUCTION_RECORD.REGIONAL_CUISINE_RECIPE	Regional cuisine recipes
198	SUB.DAILY_LIFE.GARDENING	Gardening and home horticulture
199	SUB.DAILY_LIFE.GARDENING.ORNAMENTAL_LANDSCAPE_GARDENING	Ornamental and landscape gardening
200	SUB.DAILY_LIFE.GARDENING.ORNAMENTAL_LANDSCAPE_GARDENING.GARDEN_PLANT_CARE_GUIDES	Garden plant care guides
201	SUB.DAILY_LIFE.GARDENING.VEGETABLE_KITCHEN_GARDENING	Vegetable and kitchen gardening
202	SUB.DAILY_LIFE.HOME_ECONOMICS	Home economics and household management
203	SUB.DAILY_LIFE.HOME_ECONOMICS.HOUSEHOLD_BUDGETING_RESOURCE_MANAGEMENT	Household budgeting and resource management
204	SUB.DAILY_LIFE.HOME_ECONOMICS.HOUSEHOLD_BUDGETING_RESOURCE_MANAGEMENT.UTILITY_BILL_HOME_ENERGY_TRACKING	Utility bill and home energy tracking
205	SUB.DAILY_LIFE.HOME_ECONOMICS.HOUSEHOLD_BUDGETING_RESOURCE_MANAGEMENT.UTILITY_SERVICE_BILLING_RECORDS	Utility service billing records
206	SUB.DAILY_LIFE.HOME_ECONOMICS.HOUSEHOLD_BUDGETING_RESOURCE_MANAGEMENT.UTILITY_SERVICE_START_STOP_MOVE	Utility service start stop and move records
207	SUB.DAILY_LIFE.HOME_ECONOMICS.SUSTAINABLE_HOME_PRACTICES	Sustainable home practices
208	SUB.DAILY_LIFE.HOME_ECONOMICS.SUSTAINABLE_HOME_PRACTICES.HOME_WASTE_RECYCLING_ROUTINES	Home waste and recycling routines
209	SUB.DAILY_LIFE.HOME_HOUSING	Home and housing
210	SUB.DAILY_LIFE.HOME_HOUSING.INTERIOR_HOME_DESIGN	Interior and home design
211	SUB.DAILY_LIFE.HOME_HOUSING.RENTING_MOVING_HOUSING_GUIDES	Renting, moving, and housing guides
212	SUB.DAILY_LIFE.HOME_HOUSING.RENTING_MOVING_HOUSING_GUIDES.HOME_BUYING_SELLING_GUIDES	Home buying and selling guides
213	SUB.DAILY_LIFE.HOME_HOUSING.RENTING_MOVING_HOUSING_GUIDES.HOUSING_MAINTENANCE_REPAIR_REQUESTS	Housing maintenance, repair requests, and home improvement quotes
214	SUB.DAILY_LIFE.HOME_HOUSING.RENTING_MOVING_HOUSING_GUIDES.LEASE_RENTAL_APPLICATIONS	Lease and rental applications
215	SUB.DAILY_LIFE.HOME_HOUSING.RENTING_MOVING_HOUSING_GUIDES.RENTAL_LISTING_MOVING_CHECKLIST	Rental listing and moving checklist
216	SUB.DAILY_LIFE.HOUSEKEEPING_HOSPITALITY	Housekeeping hospitality and meal service
217	SUB.DAILY_LIFE.HOUSEKEEPING_HOSPITALITY.CLEANING_LAUNDRY_HOME_OPERATIONS	Cleaning, laundry, and home operations
218	SUB.DAILY_LIFE.HOUSEKEEPING_HOSPITALITY.CLEANING_LAUNDRY_HOME_OPERATIONS.CLEANING_LAUNDRY_ROUTINES	Cleaning and laundry routines
219	SUB.DAILY_LIFE.HOUSEKEEPING_HOSPITALITY.HOSTING_MEAL_SERVICE	Housekeeping hospitality and meal service
220	SUB.DAILY_LIFE.HOUSEKEEPING_HOSPITALITY.HOSTING_MEAL_SERVICE.EVENT_HOSTING_CHECKLISTS	Event hosting checklists
221	SUB.DAILY_LIFE.PERSONAL_FINANCE	Personal finance
222	SUB.DAILY_LIFE.PERSONAL_FINANCE.BUDGETING_SAVING_DEBT	Budgeting saving and debt management
223	SUB.DAILY_LIFE.PERSONAL_FINANCE.BUDGETING_SAVING_DEBT.HOUSEHOLD_BUDGET_DEBT_PLAN	Household budgeting and debt planning
224	SUB.DAILY_LIFE.PERSONAL_FINANCE.BUDGETING_SAVING_DEBT.HOUSEHOLD_BUDGET_WORKBOOKS	Household budget workbooks
225	SUB.DAILY_LIFE.PERSONAL_FINANCE.INVESTING_RETIREMENT_PLANNING	Investing and retirement planning
226	SUB.DAILY_LIFE.PERSONAL_FINANCE.INVESTING_RETIREMENT_PLANNING.PERSONAL_RETIREMENT_PLANNING	Personal retirement planning
227	SUB.DAILY_LIFE.PETS_ANIMALS	Pets and animal care
228	SUB.DAILY_LIFE.PETS_ANIMALS.PET_CARE_TRAINING	Pet care and training
229	SUB.DAILY_LIFE.PETS_ANIMALS.PET_CARE_TRAINING.PET_FEEDING_TRAINING_LOGS	Pet feeding and training logs / guides
230	SUB.DAILY_LIFE.PETS_ANIMALS.PET_HEALTH_WELFARE_NONCLINICAL	Pet health and welfare nonclinical
231	SUB.DAILY_LIFE.PETS_ANIMALS.PET_HEALTH_WELFARE_NONCLINICAL.PET_ADOPTION_WELFARE_GUIDES	Pet adoption and welfare guides
232	SUB.DAILY_LIFE.SELF_HELP	Self help and personal improvement
233	SUB.DAILY_LIFE.SELF_HELP.PRODUCTIVITY_HABITS	Self help and personal improvement - Productivity and habits
234	SUB.DAILY_LIFE.SELF_HELP.PRODUCTIVITY_HABITS.SELF_HELP_PRODUCTIVITY_JOURNALS	Self help productivity journals
235	SUB.DAILY_LIFE.SELF_HELP.STRESS_WELLBEING_NONCLINICAL	Stress and wellbeing, non-clinical

Data and artificial intelligence / 데이터와 인공지능 — 61 codes

Exact index	Code	Name
236	SUB.DATA_AI	Data and artificial intelligence
237	SUB.DATA_AI.AI_SAFETY_BIAS_GOVERNANCE	AI safety bias ethics and governance
238	SUB.DATA_AI.AI_SAFETY_BIAS_GOVERNANCE.CONVERSATION_SAFETY_REVIEW_DIALOGUES	Conversation safety review dialogues
239	SUB.DATA_AI.ANNOTATION_LABELING	Annotation labeling and ground truth
240	SUB.DATA_AI.ANNOTATION_LABELING.PROMPT_INSTRUCTION_DATASET_CURATION	Prompt and instruction dataset curation
241	SUB.DATA_AI.ANNOTATION_LABELING.PROMPT_INSTRUCTION_DATASET_CURATION.ASSISTANT_RESPONSE_EVALUATION_DIALOGUES	Assistant response evaluation dialogues
242	SUB.DATA_AI.BENCHMARKS_EVALUATION	Benchmarks metrics and model evaluation
243	SUB.DATA_AI.BENCHMARKS_EVALUATION.WEAK_EVIDENCE_STRESS_TESTING	Weak-evidence stress testing
244	SUB.DATA_AI.COMPUTER_VISION_MULTIMODAL	Computer vision and multimodal AI
245	SUB.DATA_AI.DATASETS	Datasets
246	SUB.DATA_AI.DATASETS.CORPUS_QUALITY_FILTERING_THRESHOLDS	Corpus quality filtering thresholds
247	SUB.DATA_AI.DATASETS.DATASET_DOCUMENTATION_DATASHEETS	Dataset Documentation and Datasheets
248	SUB.DATA_AI.DATA_ANALYSIS	Data analysis
249	SUB.DATA_AI.DATA_ANALYSIS.EXPLORATORY_ANALYSIS_RESULT_TABLES	Exploratory analysis result tables
250	SUB.DATA_AI.DATA_COLLECTION_CURATION	Data collection curation and preparation
251	SUB.DATA_AI.DATA_ENGINEERING_PIPELINES	Data engineering pipelines and platforms
252	SUB.DATA_AI.DATA_MANAGEMENT	Data management and databases
253	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE	Data quality governance lineage and privacy
254	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.ABSTENTION_POLICY_EVALUATION	Abstention policy evaluation
255	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CHILD_MINOR_CLASSIFICATION_THRESHOLD_GOVERNANCE	Child and minor classification threshold governance
256	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CLASSIFICATION_EVIDENCE_QUALITY_AUDIT	Classification evidence quality audit
257	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CLASSIFIER_ABSTENTION_THRESHOLD_ANALYSIS	Classifier abstention threshold analysis
258	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CLASSIFIER_THRESHOLD_POLICY_DESIGN	Classifier threshold policy design
259	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.COMPATIBILITY_TIER_GOVERNANCE	Compatibility tier governance
260	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CONFIDENCE_CALIBRATION_RELIABILITY_ANALYSIS	Confidence calibration and reliability analysis
261	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.CORE_LABEL_SET_GOVERNANCE	Core label set governance
262	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.DATA_LINEAGE_FIELD_MAPPING_TABLES	Data lineage field mapping tables
263	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.DATA_QUALITY_PROFILING_TABLES	Data quality profiling tables
264	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.EVIDENCE_THRESHOLD_CALIBRATION	Evidence threshold calibration
265	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.FINANCIAL_CLASSIFICATION_THRESHOLD_GOVERNANCE	Financial classification threshold governance
266	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.HIGH_RISK_ALIAS_FALSE_POSITIVE_ANALYSIS	High-risk alias false-positive analysis
267	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.HIGH_RISK_ALIAS_REGRESSION_TESTING	High-risk alias regression testing
268	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.HIGH_RISK_TRIGGER_COVERAGE_AUDIT	High-risk trigger coverage audit
269	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.HIGH_RISK_TRIGGER_LOCALIZATION_POLICY	High-risk trigger localization policy
270	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.HIGH_STAKES_DOMAIN_THRESHOLD_CALIBRATION	High-stakes domain threshold calibration
271	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.LEGAL_REGULATORY_CLASSIFICATION_THRESHOLD_GOVERNANCE	Legal and regulatory classification threshold governance
272	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.MEDICAL_HEALTH_CLASSIFICATION_THRESHOLD_GOVERNANCE	Medical and health classification threshold governance
273	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.MULTILINGUAL_HIGH_RISK_TRIGGER_GOVERNANCE	Multilingual high-risk trigger governance
274	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.ONE_SHOT_CLASSIFICATION_READINESS_GOVERNANCE	One-shot classification readiness governance
275	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.PRIVACY_PERSONAL_DATA_THRESHOLD_GOVERNANCE	Privacy and personal data threshold governance
276	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.RISK_OVERRIDE_ALIAS_PRECEDENCE_COMPILATION	Risk override alias precedence compilation
277	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.RISK_SENSITIVE_CLASSIFICATION_POLICY_DESIGN	Risk-sensitive classification policy design
278	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.SAFETY_SECURITY_ABUSE_THRESHOLD_GOVERNANCE	Safety, security, and abuse threshold governance
279	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.SYNTHETIC_DATA_GENERATION_GOVERNANCE	Synthetic data generation governance
280	SUB.DATA_AI.DATA_QUALITY_GOVERNANCE.TAXONOMY_RELEASE_PROFILE_GOVERNANCE	Taxonomy release profile governance
281	SUB.DATA_AI.EMBEDDINGS_VECTOR_RETRIEVAL	Embeddings vector search and retrieval augmented generation
282	SUB.DATA_AI.EMBEDDINGS_VECTOR_RETRIEVAL.RAG_RETRIEVAL_EVALUATION	RAG retrieval evaluation
283	SUB.DATA_AI.GENERATIVE_AI_SYNTHETIC_MEDIA	Generative AI and synthetic media
284	SUB.DATA_AI.KNOWLEDGE_GRAPHS_SEMANTIC_DATA	Knowledge graphs semantic data and linked structures
285	SUB.DATA_AI.MACHINE_LEARNING	Machine learning
286	SUB.DATA_AI.MLOPS_DEPLOYMENT_MONITORING	MLOps deployment monitoring and lifecycle
287	SUB.DATA_AI.MODEL_ARCHITECTURES_TRAINING	Model architectures training and inference
288	SUB.DATA_AI.MODEL_ARCHITECTURES_TRAINING.MODEL_CARDS_EVALUATION_REPORTS	Model cards and evaluation reports
289	SUB.DATA_AI.MODEL_ARCHITECTURES_TRAINING.PROMPT_ENGINEERING_DIALOGUE_EXPERIMENTS	Prompt engineering and dialogue experiments
290	SUB.DATA_AI.NLP_CORPUS	NLP and language corpora
291	SUB.DATA_AI.NLP_CORPUS.LOW_CONTEXT_CORPUS_FILTERING	Low-context corpus filtering
292	SUB.DATA_AI.NLP_LANGUAGE_TECHNOLOGY	Natural language processing and language technology
293	SUB.DATA_AI.NLP_LANGUAGE_TECHNOLOGY.MULTILINGUAL_METADATA_LANGUAGE_ROUTING	Multilingual metadata language routing
294	SUB.DATA_AI.NLP_LANGUAGE_TECHNOLOGY.SHORT_TEXT_TOPIC_CLASSIFICATION	Short text topic classification
295	SUB.DATA_AI.TRAINING_DATASETS_SPLITS	Training validation test data and splits
296	SUB.DATA_AI.TRAINING_DATASETS_SPLITS.CORPUS_STRATIFICATION_THRESHOLDING	Corpus stratification thresholding

Earth and space sciences / 지구와 우주 — 21 codes

Exact index	Code	Name
297	SUB.EARTH_SPACE	Earth and space sciences
298	SUB.EARTH_SPACE.ASTRONOMY_SPACE	Astronomy and space
299	SUB.EARTH_SPACE.ASTRONOMY_SPACE.OBSERVING_LOGS_CELESTIAL_CATALOGS	Observing logs and celestial catalogs
300	SUB.EARTH_SPACE.ATMOSPHERIC_SCIENCE	Atmospheric science
301	SUB.EARTH_SPACE.CLIMATE_METEOROLOGY	Climate and meteorology
302	SUB.EARTH_SPACE.CLIMATE_METEOROLOGY.WEATHER_FORECAST_OBSERVATION_DATA	Weather forecast and observation data
303	SUB.EARTH_SPACE.EARTH_SYSTEM_SCIENCE	Earth system science
304	SUB.EARTH_SPACE.GEOCHEMISTRY	Geochemistry
305	SUB.EARTH_SPACE.GEOLOGY	Geology
306	SUB.EARTH_SPACE.GEOLOGY.GEOLOGICAL_SURVEY_CORE_LOGS	Geological survey and core logs
307	SUB.EARTH_SPACE.GEOMORPHOLOGY_SURFACE_PROCESSES	Geomorphology and surface processes
308	SUB.EARTH_SPACE.GEOPHYSICS_SEISMOLOGY	Geophysics and seismology
309	SUB.EARTH_SPACE.GEOPHYSICS_SEISMOLOGY.SEISMIC_EVENT_WAVEFORM_CATALOGS	Seismic event and waveform catalogs
310	SUB.EARTH_SPACE.HYDROLOGY_WATER_SCIENCE	Hydrology and water science
311	SUB.EARTH_SPACE.HYDROLOGY_WATER_SCIENCE.WATER_LEVEL_FLOW_GAUGE_RECORDS	Water level flow and gauge records
312	SUB.EARTH_SPACE.MINERALOGY	Mineralogy
313	SUB.EARTH_SPACE.OCEANOGRAPHY	Oceanography
314	SUB.EARTH_SPACE.OCEANOGRAPHY.MARINE_OBSERVATION_CRUISE_REPORTS	Marine observation and cruise reports
315	SUB.EARTH_SPACE.PALEONTOLOGY_STRATIGRAPHY	Paleontology and stratigraphy
316	SUB.EARTH_SPACE.PLANETARY_SCIENCE	Planetary science
317	SUB.EARTH_SPACE.SPACE_MISSION_SCIENCE	Space mission science

Economics and finance / 경제와 금융 — 41 codes

Exact index	Code	Name
318	SUB.ECONOMY	Economics and finance
319	SUB.ECONOMY.BEHAVIORAL_EXPERIMENTAL_ECONOMICS	Behavioral and experimental economics
320	SUB.ECONOMY.DEVELOPMENT_ECONOMICS_INEQUALITY	Development economics and inequality
321	SUB.ECONOMY.DIGITAL_PLATFORM_ECONOMY	Digital and platform economy
322	SUB.ECONOMY.ECONOMETRICS_QUANTITATIVE_ECONOMICS	Econometrics and quantitative economics
323	SUB.ECONOMY.ECONOMIC_HISTORY_THOUGHT	Economic history and thought
324	SUB.ECONOMY.ECONOMIC_SYSTEMS_THEORY	Economic systems and theory
325	SUB.ECONOMY.ENVIRONMENTAL_RESOURCE_ECONOMICS	SUB.ECONOMY.ENVIRONMENTAL_RESOURCE_ECONOMICS
326	SUB.ECONOMY.FINANCE_INVESTMENT	Finance and investment
327	SUB.ECONOMY.FINANCE_INVESTMENT.BROKERAGE_TRADING_CONFIRMATIONS	Brokerage and trading confirmations
328	SUB.ECONOMY.FINANCE_INVESTMENT.CRYPTO_DIGITAL_ASSET_ACCOUNTING	Crypto and digital asset accounting
329	SUB.ECONOMY.FINANCE_INVESTMENT.INVESTMENT_RESEARCH_ANALYST_REPORTS	Investment research and analyst reports
330	SUB.ECONOMY.FINANCE_INVESTMENT.MARKET_PRICE_REFERENCE_DATA_TABLES	Market price reference data tables
331	SUB.ECONOMY.FINANCE_INVESTMENT.PORTFOLIO_HOLDINGS_PERFORMANCE_TABLES	Portfolio holdings and performance tables
332	SUB.ECONOMY.INDUSTRIAL_ORGANIZATION_COMPETITION	Industrial organization and competition
333	SUB.ECONOMY.INSURANCE_RISK	Insurance and risk pooling
334	SUB.ECONOMY.INSURANCE_RISK.ACTUARIAL_UNDERWRITING_RISK_MODELS	Actuarial underwriting and risk models
335	SUB.ECONOMY.INSURANCE_RISK.AUTO_PROPERTY_INSURANCE_CLAIMS	Auto and property insurance claims
336	SUB.ECONOMY.INSURANCE_RISK.HEALTH_INSURANCE_BENEFITS_EOB	Health insurance benefits and EOB records
337	SUB.ECONOMY.INSURANCE_RISK.INSURANCE_CLAIMS_ADJUDICATION_RECORDS	Insurance claims and adjudication records
338	SUB.ECONOMY.INSURANCE_RISK.INSURANCE_POLICY_COVERAGE_DOCUMENTS	Insurance policy and coverage documents
339	SUB.ECONOMY.LABOR_EMPLOYMENT	Labor and employment
340	SUB.ECONOMY.LABOR_EMPLOYMENT.COMPENSATION_BENEFITS_RECORDS	Compensation and benefits records
341	SUB.ECONOMY.LABOR_EMPLOYMENT.JOB_POSTINGS_RECRUITING_PIPELINE	Job postings and recruiting pipeline
342	SUB.ECONOMY.LABOR_EMPLOYMENT.TIMESHEETS_ATTENDANCE_RECORDS	Timesheets and attendance records
343	SUB.ECONOMY.LABOR_EMPLOYMENT.TIMESHEETS_ATTENDANCE_RECORDS.WORKFORCE_TIME_CLOCK_EXPORTS	Workforce time clock exports
344	SUB.ECONOMY.LABOR_EMPLOYMENT.WORKPLACE_PERFORMANCE_REVIEW_RECORDS	Workplace performance review records
345	SUB.ECONOMY.MICRO_MACRO	Micro and macroeconomics
346	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS	Monetary economics banking and central banks
347	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS.LOAN_CREDIT_SERVICING_DOCUMENTS	Loan credit and servicing documents
348	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS.MORTGAGE_HOME_FINANCE_DOCUMENTS	Mortgage and home finance documents
349	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS.PAYMENT_CARD_MERCHANT_TRANSACTIONS	Payment card and merchant transactions
350	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS.PERSONAL_FINANCIAL_IDENTITY_KYC	Personal financial identity and KYC
351	SUB.ECONOMY.MONETARY_BANKING_CENTRAL_BANKS.RETAIL_BANK_ACCOUNT_STATEMENTS	Retail bank account statements
352	SUB.ECONOMY.PUBLIC_FINANCE	Public finance and taxation
353	SUB.ECONOMY.PUBLIC_FINANCE.PAYROLL_WITHHOLDING_REPORTS	Payroll withholding reports
354	SUB.ECONOMY.PUBLIC_FINANCE.PUBLIC_BENEFITS_ELIGIBILITY_RECORDS	Public benefits eligibility records
355	SUB.ECONOMY.PUBLIC_FINANCE.TAX_DEDUCTION_CREDIT_WORKSHEETS	Tax deduction and credit worksheets
356	SUB.ECONOMY.PUBLIC_FINANCE.TAX_NOTICE_AUDIT_CORRESPONDENCE	Tax notices and audit correspondence
357	SUB.ECONOMY.PUBLIC_FINANCE.TAX_RETURN_FILING_DOCUMENTS	Tax return filing documents
358	SUB.ECONOMY.TRADE_DEVELOPMENT	Trade and development

Education and learning / 교육과 학습 — 38 codes

Exact index	Code	Name
359	SUB.EDUCATION	Education and learning
360	SUB.EDUCATION.ADULT_LIFELONG_EDUCATION	Adult lifelong and continuing education
361	SUB.EDUCATION.ASSESSMENT	Educational assessment
362	SUB.EDUCATION.ASSESSMENT.EXAM_QUESTION_BANKS	Exam question banks
363	SUB.EDUCATION.ASSESSMENT.GRADEBOOK_SCORE_EXPORTS	Gradebook and score exports
364	SUB.EDUCATION.ASSESSMENT.RUBRIC_GRADING_SCHEMES	Educational Assessment Rubric Grading Schemes
365	SUB.EDUCATION.ASSESSMENT.STUDENT_RESPONSE_ITEM_ANALYSIS_TABLES	Student response and item analysis tables
366	SUB.EDUCATION.CLASSROOM_MANAGEMENT_ENVIRONMENT	Classroom management and learning environments
367	SUB.EDUCATION.CURRICULUM	Curriculum
368	SUB.EDUCATION.CURRICULUM.TEXTBOOK_CURRICULUM_CONTENT	Textbook and curriculum content
369	SUB.EDUCATION.EARLY_CHILDHOOD_EDUCATION	Early childhood education
370	SUB.EDUCATION.EDTECH	Educational technology
371	SUB.EDUCATION.EDTECH.LMS_COURSE_PACKAGE_OPERATIONS	LMS course package operations
372	SUB.EDUCATION.EDTECH.MOOC_LMS_FORUM_OPERATIONS	MOOC and LMS forum operations
373	SUB.EDUCATION.EDUCATIONAL_DATA_ANALYTICS	Educational data analytics and learning analytics
374	SUB.EDUCATION.EDUCATIONAL_FOUNDATIONS	Educational foundations
375	SUB.EDUCATION.EDUCATIONAL_MEASUREMENT_TESTING	Educational measurement testing and evaluation
376	SUB.EDUCATION.EDUCATION_RESEARCH_METHODS	Education research methods
377	SUB.EDUCATION.EQUITY_ACCESS_INCLUSION	Educational equity access and inclusion
378	SUB.EDUCATION.HIGHER_EDUCATION	Higher education and universities
379	SUB.EDUCATION.INSTITUTIONS_LEVELS	Educational institutions and levels
380	SUB.EDUCATION.INSTRUCTIONAL_DESIGN_PEDAGOGY	Instructional design and pedagogy
381	SUB.EDUCATION.INSTRUCTIONAL_DESIGN_PEDAGOGY.CLASSROOM_DISCUSSION_FORUMS	Classroom discussion forums and prompts
382	SUB.EDUCATION.INSTRUCTIONAL_DESIGN_PEDAGOGY.LESSON_PLAN_INSTRUCTIONAL_MATERIALS	Lesson plans and instructional materials
383	SUB.EDUCATION.INSTRUCTIONAL_DESIGN_PEDAGOGY.PEER_FEEDBACK_LEARNING_DISCUSSIONS	Peer feedback and learning discussions
384	SUB.EDUCATION.LANGUAGE_LITERACY_EDUCATION	Language literacy and reading education
385	SUB.EDUCATION.LEARNING_SCIENCES_COGNITION	Learning sciences and educational cognition
386	SUB.EDUCATION.ONLINE_DISTANCE_HYBRID_LEARNING	Online distance and hybrid learning
387	SUB.EDUCATION.POLICY_ADMINISTRATION	Education policy and administration
388	SUB.EDUCATION.POLICY_ADMINISTRATION.COURSE_SECTION_TIMETABLE_TABLES	Course section timetable tables
389	SUB.EDUCATION.POLICY_ADMINISTRATION.SCHOOL_ATTENDANCE_ENROLLMENT_TABLES	School attendance and enrollment tables
390	SUB.EDUCATION.PRIMARY_SECONDARY_EDUCATION	Primary and secondary education
391	SUB.EDUCATION.SPECIAL_INCLUSIVE	Special and inclusive education
392	SUB.EDUCATION.STEM_EDUCATION	STEM and discipline-specific education
393	SUB.EDUCATION.TEACHER_EDUCATION_DEVELOPMENT	Teacher education and professional development
394	SUB.EDUCATION.TEACHING_LEARNING	Teaching and learning
395	SUB.EDUCATION.TEACHING_LEARNING.ONLINE_TUTORING_QA_DIALOGUES	Online tutoring and Q&A dialogues
396	SUB.EDUCATION.VOCATIONAL_PROFESSIONAL_EDUCATION	Vocational professional and workforce education

Energy / 에너지 — 19 codes

Exact index	Code	Name
397	SUB.ENERGY	Energy
398	SUB.ENERGY.BATTERIES_ENERGY_STORAGE	Batteries and energy storage systems
399	SUB.ENERGY.EFFICIENCY_POLICY	Energy efficiency and policy
400	SUB.ENERGY.ENERGY_DATA_MODELING_PLANNING	Energy data modeling forecasting and planning
401	SUB.ENERGY.ENERGY_EFFICIENCY_DEMAND_RESPONSE	Energy efficiency demand response and conservation
402	SUB.ENERGY.ENERGY_POLICY_SECURITY_TRANSITION	Energy policy security and transition
403	SUB.ENERGY.ENERGY_RESOURCES_FUELS	Energy resources fuels and supply
404	SUB.ENERGY.FOSSIL_FUEL_SYSTEMS	Fossil fuel energy systems
405	SUB.ENERGY.FOSSIL_NUCLEAR	Fossil and nuclear energy
406	SUB.ENERGY.GEOTHERMAL_BIOENERGY	Geothermal bioenergy and renewable fuels
407	SUB.ENERGY.HYDROGEN_FUEL_CELLS	Hydrogen energy and fuel cells
408	SUB.ENERGY.HYDRO_MARINE_ENERGY	Hydropower and marine energy
409	SUB.ENERGY.NUCLEAR_ENERGY_REACTORS	Nuclear energy reactors and fuel cycle
410	SUB.ENERGY.POWER_GRIDS_ELECTRICITY_MARKETS	Power grids electricity systems and markets
411	SUB.ENERGY.RENEWABLE	Renewable energy
412	SUB.ENERGY.SOLAR_ENERGY	Solar energy systems
413	SUB.ENERGY.STORAGE_GRID	Energy storage and grid
414	SUB.ENERGY.THERMAL_POWER_HEAT_SYSTEMS	Thermal power heat and energy conversion
415	SUB.ENERGY.WIND_ENERGY	Wind energy systems

Engineering and manufacturing / 공학과 제조 — 23 codes

Exact index	Code	Name
416	SUB.ENGINEERING	Engineering and manufacturing
417	SUB.ENGINEERING.BUILDING_SYSTEMS	Building systems and services
418	SUB.ENGINEERING.CHEMICAL_PROCESS	Chemical process and industrial chemistry
419	SUB.ENGINEERING.CHEMICAL_PROCESS.SAFETY_DATA_SHEETS_CHEMICAL_HANDLING	Safety data sheets and chemical handling
420	SUB.ENGINEERING.CIVIL_CONSTRUCTION	Civil and construction engineering
421	SUB.ENGINEERING.CONSUMER_GOODS_LIGHT_INDUSTRY	Consumer goods and light industry
422	SUB.ENGINEERING.ELECTRICAL_ELECTRONICS	Electrical and electronics engineering
423	SUB.ENGINEERING.ENGINEERING_SYSTEMS_FOUNDATIONS	Engineering systems foundations
424	SUB.ENGINEERING.ENGINEERING_SYSTEMS_FOUNDATIONS.TECHNICAL_SPECIFICATION_STANDARDS	Technical specifications and standards
425	SUB.ENGINEERING.HISTORY	History of technology and engineering
426	SUB.ENGINEERING.MANUFACTURING_INDUSTRY	Manufacturing and industrial technology
427	SUB.ENGINEERING.MATERIALS_PROCESSING	Industrial materials processing
428	SUB.ENGINEERING.MECHANICAL	Mechanical engineering
429	SUB.ENGINEERING.MECHANICAL.MAINTENANCE_REPAIR_MANUALS	Maintenance and repair manuals
430	SUB.ENGINEERING.METHODS_EDUCATION	Engineering methods and education
431	SUB.ENGINEERING.METHODS_EDUCATION.PRODUCT_REQUIREMENTS_ENGINEERING	Product requirements engineering
432	SUB.ENGINEERING.METHODS_EDUCATION.TEST_VALIDATION_PROTOCOLS	Test and validation protocols
433	SUB.ENGINEERING.MINING_METALLURGY	Mining and metallurgical engineering
434	SUB.ENGINEERING.PHILOSOPHY_THEORY	Philosophy and theory of technology
435	SUB.ENGINEERING.PRECISION_INSTRUMENTS	Precision instruments and mechanisms
436	SUB.ENGINEERING.ROBOTICS_AUTOMATION	Robotics and automation
437	SUB.ENGINEERING.TEXTILES_CLOTHING	Textiles clothing and garment manufacture
438	SUB.ENGINEERING.TRANSPORTATION	Transportation and transport engineering

Environment and sustainability / 환경과 지속가능성 — 22 codes

Exact index	Code	Name
439	SUB.ENVIRONMENT	Environment and sustainability
440	SUB.ENVIRONMENT.AIR_QUALITY_EMISSIONS	Air quality emissions and atmospheric pollution
441	SUB.ENVIRONMENT.BIODIVERSITY_ECOSYSTEM_CONSERVATION	Biodiversity ecosystem and habitat conservation
442	SUB.ENVIRONMENT.CIRCULAR_ECONOMY_RESOURCE_EFFICIENCY	Circular economy resource efficiency and sustainable production
443	SUB.ENVIRONMENT.CLIMATE_CHANGE_IMPACTS_ADAPTATION	Climate change impacts adaptation and mitigation
444	SUB.ENVIRONMENT.CONSERVATION	Conservation
445	SUB.ENVIRONMENT.ENVIRONMENTAL_ENGINEERING_CONTROL	Environmental engineering control and treatment systems
446	SUB.ENVIRONMENT.ENVIRONMENTAL_HEALTH_EXPOSURE_RISK	Environmental health exposure and risk
447	SUB.ENVIRONMENT.ENVIRONMENTAL_JUSTICE_COMMUNITY	Environmental justice community impacts and equity
448	SUB.ENVIRONMENT.ENVIRONMENTAL_MONITORING_ASSESSMENT	Environmental monitoring and assessment
449	SUB.ENVIRONMENT.ENVIRONMENTAL_MONITORING_ASSESSMENT.ENVIRONMENTAL_IMPACT_ASSESSMENT_REPORTS	Environmental impact assessment reports
450	SUB.ENVIRONMENT.ENVIRONMENTAL_SCIENCE_SYSTEMS	Environmental science and systems
451	SUB.ENVIRONMENT.ENV_POLICY	Environmental policy
452	SUB.ENVIRONMENT.NATURAL_RESOURCE_MANAGEMENT	Natural resource management and environmental use
453	SUB.ENVIRONMENT.POLLUTION_WASTE	Pollution and waste
454	SUB.ENVIRONMENT.RESTORATION_REWILDING_NATURE_BASED	Ecological restoration rewilding and nature based solutions
455	SUB.ENVIRONMENT.SOIL_LAND_CONTAMINATION_REMEDIATION	Soil land contamination remediation and degradation
456	SUB.ENVIRONMENT.SOLID_HAZARDOUS_WASTE_RECYCLING	Solid and hazardous waste management and recycling
457	SUB.ENVIRONMENT.SUSTAINABILITY	Sustainability
458	SUB.ENVIRONMENT.URBAN_BUILT_ENVIRONMENT_GREEN_INFRASTRUCTURE	Urban built environment and green infrastructure
459	SUB.ENVIRONMENT.WATER_POLLUTION_WASTEWATER	Water pollution wastewater and sewage
460	SUB.ENVIRONMENT.WATER_RESOURCES_WATERSHEDS	Water resources watersheds and aquatic environment

General knowledge and reference / 일반 지식과 참고 — 22 codes

Exact index	Code	Name
461	SUB.GENERAL	General knowledge and reference
462	SUB.GENERAL.FOUNDATIONS	Foundational knowledge
463	SUB.GENERAL.GENERAL_COLLECTIONS_MISCELLANY	General collections and miscellany
464	SUB.GENERAL.GENERAL_COLLECTIONS_MISCELLANY.MIXED_DOCUMENT_COLLECTIONS	Mixed document collections and miscellany
465	SUB.GENERAL.GENERAL_REPORTS	General reports
466	SUB.GENERAL.GENERAL_REPORTS.ISSUE_BRIEF_BACKGROUNDERS	Issue briefs and backgrounders
467	SUB.GENERAL.GENERAL_REPORTS.STATUS_PROGRESS_SUMMARY_REPORTS	Status progress and summary reports
468	SUB.GENERAL.KNOWLEDGE_ORGANIZATION	Knowledge organization
469	SUB.GENERAL.KNOWLEDGE_ORGANIZATION.METADATA_SCHEMA_DESCRIPTIVE_CATALOGING	Metadata schemas and descriptive cataloging
470	SUB.GENERAL.KNOWLEDGE_ORGANIZATION.TAXONOMIES_ONTOLOGIES_CLASSIFICATION	Taxonomies ontologies and classification
471	SUB.GENERAL.REFERENCE_WORKS	Reference works
472	SUB.GENERAL.REFERENCE_WORKS.BIBLIOGRAPHIES_READING_LISTS	Bibliographies and reading lists
473	SUB.GENERAL.REFERENCE_WORKS.CATALOGS_INVENTORIES	Catalogs and inventories
474	SUB.GENERAL.REFERENCE_WORKS.DICTIONARIES_GLOSSARIES	Dictionaries and glossaries
475	SUB.GENERAL.REFERENCE_WORKS.DIRECTORIES_REGISTERS	Directories and registers
476	SUB.GENERAL.REFERENCE_WORKS.ENCYCLOPEDIAS_KNOWLEDGE_BASES	Encyclopedias and knowledge bases
477	SUB.GENERAL.REFERENCE_WORKS.FAQ_HELP_REFERENCE	FAQ help and quick reference
478	SUB.GENERAL.REFERENCE_WORKS.INDEXES_FINDING_AIDS	Indexes and finding aids
479	SUB.GENERAL.STANDARDS_METROLOGY	Standards metrology and quality infrastructure
480	SUB.GENERAL.STANDARDS_METROLOGY.MEASUREMENT_UNITS_CONVERSION	Measurement units and conversion
481	SUB.GENERAL.STANDARDS_METROLOGY.SPECIFICATION_STANDARDS_OVERVIEW	Specification standards overview
482	SUB.GENERAL.SYSTEMS_THEORY	Systems theory and general frameworks

Geography and cartography / — 24 codes

Exact index	Code	Name
483	SUB.GEOGRAPHY_CARTOGRAPHY	Geography and cartography
484	SUB.GEOGRAPHY_CARTOGRAPHY.CARTOGRAPHY_MAPS	Cartography and map studies
485	SUB.GEOGRAPHY_CARTOGRAPHY.CULTURAL_HISTORICAL_GEOGRAPHY	Cultural and historical geography
486	SUB.GEOGRAPHY_CARTOGRAPHY.GAZETTEERS_PLACE_NAMES	Gazetteers place names and toponymy
487	SUB.GEOGRAPHY_CARTOGRAPHY.GAZETTEERS_PLACE_NAMES.ADDRESS_PLACE_DIRECTORY	Address and place directories
488	SUB.GEOGRAPHY_CARTOGRAPHY.GEODESY_SURVEYING_COORDINATES	Geodesy surveying and coordinates
489	SUB.GEOGRAPHY_CARTOGRAPHY.GEOGRAPHIC_METHODS_FIELDWORK	Geographic methods and fieldwork
490	SUB.GEOGRAPHY_CARTOGRAPHY.GEOSPATIAL_ANALYSIS_GIS	Geospatial analysis and GIS
491	SUB.GEOGRAPHY_CARTOGRAPHY.GEOSPATIAL_ANALYSIS_GIS.GIS_ATTRIBUTE_TABLES	GIS attribute tables
492	SUB.GEOGRAPHY_CARTOGRAPHY.GEOSPATIAL_ANALYSIS_GIS.GIS_LAYER_METADATA	GIS layer metadata
493	SUB.GEOGRAPHY_CARTOGRAPHY.HUMAN_REGIONAL_GEOGRAPHY	Human and regional geography
494	SUB.GEOGRAPHY_CARTOGRAPHY.MAPS_ATLASES_REFERENCE	Maps atlases and geographic reference
495	SUB.GEOGRAPHY_CARTOGRAPHY.MAPS_ATLASES_REFERENCE.ROUTE_ITINERARY_MAPS	Route itinerary maps
496	SUB.GEOGRAPHY_CARTOGRAPHY.MAP_DESIGN_PROJECTIONS	Map design projections and cartographic representation
497	SUB.GEOGRAPHY_CARTOGRAPHY.OCEAN_REGIONS	Ocean and maritime geography
498	SUB.GEOGRAPHY_CARTOGRAPHY.PHYSICAL_GEOGRAPHY	Physical geography
499	SUB.GEOGRAPHY_CARTOGRAPHY.PLACE_REGIONAL_DESCRIPTION	Place and regional description
500	SUB.GEOGRAPHY_CARTOGRAPHY.POLITICAL_BOUNDARIES_TERRITORY	Political geography boundaries and territory
501	SUB.GEOGRAPHY_CARTOGRAPHY.REMOTE_SENSING_EARTH_OBSERVATION	Remote sensing and earth observation
502	SUB.GEOGRAPHY_CARTOGRAPHY.SETTLEMENT_URBAN_RURAL_GEOGRAPHY	Settlement urban and rural geography
503	SUB.GEOGRAPHY_CARTOGRAPHY.SPATIAL_DATA_INFRASTRUCTURE	Spatial data infrastructure and geodata standards
504	SUB.GEOGRAPHY_CARTOGRAPHY.SPATIAL_DATA_INFRASTRUCTURE.GEOCODING_ADDRESS_MATCH_TABLES	Geocoding and address match tables
505	SUB.GEOGRAPHY_CARTOGRAPHY.TOPOGRAPHY_LANDFORMS	Topography terrain and landforms
506	SUB.GEOGRAPHY_CARTOGRAPHY.TRAVEL_EXPLORATION_GEOGRAPHIC_DESCRIPTION	Travel exploration and geographic description

Health and medicine / 보건과 의학 — 39 codes

Exact index	Code	Name
507	SUB.HEALTH	Health and medicine
508	SUB.HEALTH.ANATOMY_PHYSIOLOGY	Anatomy and physiology
509	SUB.HEALTH.CARDIORESPIRATORY_HEALTH	Cardiovascular and respiratory health
510	SUB.HEALTH.CHRONIC_NONCOMMUNICABLE_DISEASES	Chronic and noncommunicable diseases
511	SUB.HEALTH.CLINICAL_MEDICINE	Clinical medicine
512	SUB.HEALTH.CLINICAL_MEDICINE.CLINICAL_GUIDELINES_PROTOCOLS	Clinical guidelines and protocols
513	SUB.HEALTH.CLINICAL_MEDICINE.CLINICAL_LAB_RESULT_TABLES	Clinical lab result tables
514	SUB.HEALTH.CLINICAL_MEDICINE.PATIENT_PROVIDER_SECURE_MESSAGES	Patient provider secure messages
515	SUB.HEALTH.CLINICAL_MEDICINE.PATIENT_VITAL_SIGNS_FLOW_SHEETS	Patient vital signs flow sheets
516	SUB.HEALTH.CLINICAL_MEDICINE.TELEHEALTH_CONSULTATION_TRANSCRIPTS	Telehealth consultation transcripts
517	SUB.HEALTH.DIAGNOSTICS_LABORATORY_MEDICINE	Diagnostics and laboratory medicine
518	SUB.HEALTH.DIGITAL_HEALTH_INFORMATICS	Digital health and health informatics
519	SUB.HEALTH.DIGITAL_HEALTH_INFORMATICS.ELECTRONIC_HEALTH_RECORDS	Electronic Health Records
520	SUB.HEALTH.EMERGENCY_CRITICAL_CARE	Emergency critical and trauma care
521	SUB.HEALTH.EPIDEMIOLOGY_SURVEILLANCE	Epidemiology and health surveillance
522	SUB.HEALTH.HEALTH_SYSTEMS_SERVICES	Health systems services and care delivery
523	SUB.HEALTH.INFECTIOUS_DISEASES	Infectious diseases and infection control
524	SUB.HEALTH.MATERNAL_CHILD_HEALTH	Maternal child and life-stage health
525	SUB.HEALTH.MEDICAL_DEVICES_ASSISTIVE_TECH	Medical devices and assistive health technology
526	SUB.HEALTH.MEDICAL_DEVICES_ASSISTIVE_TECH.MEDICAL_DEVICE_REGULATORY_SUBMISSION	Medical device regulatory submissions
527	SUB.HEALTH.MEDICAL_HEALTH_SCIENCE_FOUNDATIONS	Medical and health science foundations
528	SUB.HEALTH.MEDICAL_IMAGING_RADIOLOGY	Medical imaging and radiology
529	SUB.HEALTH.MENTAL_HEALTH	Mental health
530	SUB.HEALTH.MENTAL_HEALTH.COUNSELING_THERAPY_DIALOGUE_RECORDS	Counseling and therapy dialogue records
531	SUB.HEALTH.MENTAL_HEALTH.MENTAL_HEALTH_PEER_SUPPORT_COMMUNITIES	Mental health peer support communities
532	SUB.HEALTH.NEUROLOGY_NEUROHEALTH	Neurology and nervous system health
533	SUB.HEALTH.NURSING_ALLIED_HEALTH	Nursing and allied health practice
534	SUB.HEALTH.NUTRITION_WELLNESS	Nutrition and wellness
535	SUB.HEALTH.OCCUPATIONAL_ENVIRONMENTAL_HEALTH	Occupational and environmental health
536	SUB.HEALTH.ONCOLOGY_CANCER_CARE	Oncology and cancer care
537	SUB.HEALTH.PATIENT_SAFETY_MEDICAL_ETHICS	Patient safety medical ethics and care quality
538	SUB.HEALTH.PHARMACY_DRUGS	Pharmacy and drugs
539	SUB.HEALTH.PHARMACY_DRUGS.DRUG_LABEL_PHARMACOVIGILANCE	Drug label and pharmacovigilance
540	SUB.HEALTH.PUBLIC_HEALTH	Public health
541	SUB.HEALTH.PUBLIC_HEALTH.EPIDEMIOLOGY_CASE_LINE_LISTS	Epidemiology case line lists
542	SUB.HEALTH.PUBLIC_HEALTH.PUBLIC_HEALTH_ADVISORIES	Public health advisories
543	SUB.HEALTH.PUBLIC_HEALTH.VACCINATION_REGISTRY_EXPORTS	Vaccination registry exports
544	SUB.HEALTH.REHABILITATION_PHYSICAL_FUNCTION	Rehabilitation therapy and physical function
545	SUB.HEALTH.SURGERY_SPECIALTIES	Surgery and medical specialties

History and area studies / 역사와 지역 연구 — 26 codes

Exact index	Code	Name
546	SUB.HISTORY	History and area studies
547	SUB.HISTORY.ANCIENT_HISTORY	Ancient history
548	SUB.HISTORY.ARCHAEOLOGY	Archaeology and material antiquity
549	SUB.HISTORY.ARCHAEOLOGY.SITE_EXCAVATION_REPORTS	Archaeological site and excavation reports
550	SUB.HISTORY.AREA_STUDIES	Area studies
551	SUB.HISTORY.AREA_STUDIES.CONTEMPORARY_AREA_BRIEFINGS	Contemporary area briefings
552	SUB.HISTORY.AUXILIARY_SCIENCES	SUB.HISTORY.AUXILIARY_SCIENCES
553	SUB.HISTORY.AUXILIARY_SCIENCES.ARCHIVAL_FINDING_AIDS	Archival finding aids
554	SUB.HISTORY.BIOGRAPHY	Biography and life history
555	SUB.HISTORY.BIOGRAPHY.BIOGRAPHICAL_PROFILE_OBITUARY	Biographical profiles and obituaries
556	SUB.HISTORY.BIOGRAPHY.MEMOIR_AUTOBIOGRAPHY	Memoir and autobiography as historical subject
557	SUB.HISTORY.BIOGRAPHY.PROSOPOGRAPHY_COLLECTIVE_BIOGRAPHY	Collective biography and prosopography
558	SUB.HISTORY.GENEALOGY	Genealogy and family history
559	SUB.HISTORY.GENEALOGY.FAMILY_TREE_RECORDS	Family tree and genealogy records
560	SUB.HISTORY.HERITAGE_MEMORY	Heritage and memory
561	SUB.HISTORY.HERITAGE_MEMORY.MUSEUM_EXHIBIT_INTERPRETATION	Museum exhibit and heritage interpretation
562	SUB.HISTORY.HISTORIOGRAPHY	Historiography and historical method
563	SUB.HISTORY.KOREAN_HISTORY	Korean history
564	SUB.HISTORY.KOREAN_HISTORY.LOCAL_REGIONAL_HISTORY	Local and regional history
565	SUB.HISTORY.REGIONAL_CIVILIZATION_HISTORY	Regional and civilization history
566	SUB.HISTORY.REGIONAL_CIVILIZATION_HISTORY.AMERICAS	Americas history and civilizations
567	SUB.HISTORY.REGIONAL_CIVILIZATION_HISTORY.EAST_ASIA	East Asian history and civilizations
568	SUB.HISTORY.REGIONAL_CIVILIZATION_HISTORY.EUROPE	European history and civilizations
569	SUB.HISTORY.REGIONAL_CIVILIZATION_HISTORY.MIDDLE_EAST_AFRICA	Middle Eastern and African history and civilizations
570	SUB.HISTORY.WORLD_HISTORY	World history
571	SUB.HISTORY.WORLD_HISTORY.TIMELINE_CHRONOLOGY_REFERENCE	Timeline and chronology reference

Humanities / 인문학 — 16 codes

Exact index	Code	Name
572	SUB.HUMANITIES	Humanities
573	SUB.HUMANITIES.CLASSICS	Classics
574	SUB.HUMANITIES.EPISTEMOLOGY	Epistemology
575	SUB.HUMANITIES.ETHICS	Ethics
576	SUB.HUMANITIES.ETHICS.APPLIED_PROFESSIONAL_ETHICS	Applied and professional ethics
577	SUB.HUMANITIES.ETHICS.TECHNOLOGY_AI_ETHICS	Technology and AI ethics
578	SUB.HUMANITIES.LOGIC	Logic
579	SUB.HUMANITIES.METAPHYSICS	Metaphysics
580	SUB.HUMANITIES.MYTH_FOLKLORE	Myth and folklore
581	SUB.HUMANITIES.OCCULT_ESOTERIC	Occult and esoteric studies
582	SUB.HUMANITIES.PHILOSOPHICAL_TRADITIONS	Philosophical traditions and schools
583	SUB.HUMANITIES.PHILOSOPHY	Philosophy
584	SUB.HUMANITIES.PSYCHOLOGY	Psychology
585	SUB.HUMANITIES.PSYCHOLOGY.COGNITIVE_BEHAVIORAL_PROCESSES	Cognitive and behavioral processes
586	SUB.HUMANITIES.PSYCHOLOGY.SOCIAL_PERSONALITY_PSYCHOLOGY	Social and personality psychology
587	SUB.HUMANITIES.TEXTUAL_STUDIES	Textual studies

Information science and library studies / 정보학과 문헌정보 — 18 codes

Exact index	Code	Name
588	SUB.INFORMATION_SCIENCE	Information science and library studies
589	SUB.INFORMATION_SCIENCE.ARCHIVES_RECORDS	Archives and records
590	SUB.INFORMATION_SCIENCE.BIBLIOGRAPHY_CATALOGS	Bibliography catalogs and bibliographic control
591	SUB.INFORMATION_SCIENCE.BOOK_STUDIES_BIBLIOLOGY	Book studies bibliology and documentary materiality
592	SUB.INFORMATION_SCIENCE.CATALOGING_CLASSIFICATION_INDEXING	Cataloging classification and subject access
593	SUB.INFORMATION_SCIENCE.COLLECTION_DEVELOPMENT_PRESERVATION	Collection development acquisition and preservation
594	SUB.INFORMATION_SCIENCE.DIGITAL_LIBRARIES_REPOSITORIES	Digital libraries repositories and discovery platforms
595	SUB.INFORMATION_SCIENCE.INFORMATION_RETRIEVAL	Information retrieval
596	SUB.INFORMATION_SCIENCE.INFORMATION_RETRIEVAL.SEARCH_RESULT_RELEVANCE_RANKING	Search result relevance and ranking
597	SUB.INFORMATION_SCIENCE.INFORMATION_RETRIEVAL.SNIPPET_GENERATION_QUERY_SUMMARIZATION	Snippet generation and query summarization
598	SUB.INFORMATION_SCIENCE.LIBRARY_ADMIN_MANAGEMENT	Library administration governance and workforce
599	SUB.INFORMATION_SCIENCE.LIBRARY_BUILDINGS_EQUIPMENT	Library buildings spaces and equipment
600	SUB.INFORMATION_SCIENCE.LIBRARY_PUBLIC_SERVICES	Library public services reference and circulation
601	SUB.INFORMATION_SCIENCE.LIBRARY_SCIENCE	Library science
602	SUB.INFORMATION_SCIENCE.METADATA_STANDARDS	Metadata standards
603	SUB.INFORMATION_SCIENCE.MUSEUM_STUDIES	Museum studies and exhibition management
604	SUB.INFORMATION_SCIENCE.READING_INFORMATION_MEDIA_USE	Reading information behavior and media use
605	SUB.INFORMATION_SCIENCE.SPECIAL_INSTITUTIONAL_LIBRARIES	Special institutional school and academic libraries

SUB.LANGUAGE_LINGUISTICS / 언어와 언어학 — 17 codes

Exact index	Code	Name
606	SUB.LANGUAGE_LINGUISTICS	SUB.LANGUAGE_LINGUISTICS
607	SUB.LANGUAGE_LINGUISTICS.COMPOSITION_WRITING	Composition and writing
608	SUB.LANGUAGE_LINGUISTICS.DIALECTOLOGY	Dialectology
609	SUB.LANGUAGE_LINGUISTICS.ETYMOLOGY_LEXICAL_MEANING	Etymology and lexical meaning
610	SUB.LANGUAGE_LINGUISTICS.GRAMMAR_SYNTAX	Grammar and syntax
611	SUB.LANGUAGE_LINGUISTICS.LANGUAGE_EDUCATION	Language education
612	SUB.LANGUAGE_LINGUISTICS.LANGUAGE_HISTORY_POLICY	Language history and policy
613	SUB.LANGUAGE_LINGUISTICS.LANGUAGE_SPECIFIC_STUDY	Language-specific study
614	SUB.LANGUAGE_LINGUISTICS.LANGUAGE_STUDY_FOUNDATIONS	Language study foundations
615	SUB.LANGUAGE_LINGUISTICS.LEXICOGRAPHY	Lexicography
616	SUB.LANGUAGE_LINGUISTICS.PHONOLOGY_WRITING	Phonology speech and writing systems
617	SUB.LANGUAGE_LINGUISTICS.READING_CONVERSATION	Reading interpretation and conversation
618	SUB.LANGUAGE_LINGUISTICS.SEMANTICS_PRAGMATICS	Semantics and pragmatics
619	SUB.LANGUAGE_LINGUISTICS.SIGN_LANGUAGES	Sign languages and visual languages
620	SUB.LANGUAGE_LINGUISTICS.TRANSLATION	Translation and interpreting
621	SUB.LANGUAGE_LINGUISTICS.VOCABULARY_LEXIS	Vocabulary and lexis
622	SUB.LANGUAGE_LINGUISTICS.WRITING_SYMBOL_SYSTEMS	Writing symbol and notation systems

Law and legal systems / 법과 제도 — 37 codes

Exact index	Code	Name
623	SUB.LAW	Law and legal systems
624	SUB.LAW.ADMINISTRATIVE_REGULATORY_LAW	Administrative and regulatory law
625	SUB.LAW.ADMINISTRATIVE_REGULATORY_LAW.PUBLIC_PROCUREMENT_CONTRACTING	Public procurement and contracting law
626	SUB.LAW.CONSTITUTIONAL_CIVIL_RIGHTS	Constitutional law civil rights and liberties
627	SUB.LAW.CONTRACTS_TRANSACTIONS	Contracts and transactions
628	SUB.LAW.CONTRACTS_TRANSACTIONS.CONTRACT_CLAUSE_ANALYSIS	Contract clause analysis
629	SUB.LAW.CORPORATE_COMMERCIAL_LAW	Corporate commercial and business law
630	SUB.LAW.COURTS_LITIGATION_EVIDENCE	Courts litigation and evidence
631	SUB.LAW.COURTS_LITIGATION_EVIDENCE.CASE_LAW_BRIEFING	Case law briefing
632	SUB.LAW.CRIMINAL_LAW	Criminal law
633	SUB.LAW.DATA_PRIVACY_TECH_LAW	Data privacy cybersecurity and technology law
634	SUB.LAW.DATA_PRIVACY_TECH_LAW.COOKIE_CONSENT_PRIVACY_NOTICE_INTERFACES	Cookie consent and privacy notice interfaces
635	SUB.LAW.DATA_PRIVACY_TECH_LAW.PRIVACY_DATA_PROTECTION_COMPLIANCE	Privacy data protection compliance
636	SUB.LAW.ENVIRONMENT_ENERGY_LAW	Environmental energy and climate law
637	SUB.LAW.FAMILY_INHERITANCE_LAW	Family inheritance and personal status law
638	SUB.LAW.HEALTH_BIOETHICS_MEDICAL_LAW	Health medical and bioethics law
639	SUB.LAW.IMMIGRATION_CITIZENSHIP_LAW	Immigration citizenship and nationality law
640	SUB.LAW.INTELLECTUAL_PROPERTY	Intellectual property
641	SUB.LAW.INTERNATIONAL_LAW	International law
642	SUB.LAW.LABOR_EMPLOYMENT_LAW	Labor employment and workplace law
643	SUB.LAW.LABOR_EMPLOYMENT_LAW.EMPLOYMENT_CONTRACT_DISPUTE_DOCUMENTS	Employment contract and dispute documents
644	SUB.LAW.LEGAL_COMPLIANCE_RISK_GOVERNANCE	Legal compliance risk and governance
645	SUB.LAW.LEGAL_PROCEDURE	Legal procedure
646	SUB.LAW.LEGAL_PROCEDURE.DEPOSITION_HEARING_TRANSCRIPTS	Deposition and hearing transcripts
647	SUB.LAW.LEGAL_PROCEDURE.LEGAL_CLIENT_INTAKE_CONVERSATIONS	Legal client intake conversations
648	SUB.LAW.LEGAL_PROCEDURE.MEDIATION_SETTLEMENT_DIALOGUES	Mediation and settlement dialogues
649	SUB.LAW.LEGAL_SYSTEMS_JURISPRUDENCE	Legal systems and jurisprudence
650	SUB.LAW.LEGISLATION_STATUTES_RULEMAKING	Legislation statutes and rulemaking
651	SUB.LAW.LEGISLATION_STATUTES_RULEMAKING.STATUTORY_REGULATORY_TEXT	Statutory and regulatory text
652	SUB.LAW.PRIVATE_LAW	Private law
653	SUB.LAW.PROPERTY_REAL_ESTATE_LAW	Property real estate and land law
654	SUB.LAW.PROPERTY_REAL_ESTATE_LAW.LEASE_TENANCY_DISPUTE_DOCUMENTS	Lease and tenancy dispute documents
655	SUB.LAW.PROPERTY_REAL_ESTATE_LAW.PROPERTY_TITLE_DEED_RECORDS	Property title and deed records
656	SUB.LAW.PUBLIC_LAW	Public law
657	SUB.LAW.TAX_FINANCIAL_REGULATION	Tax law and financial regulation
658	SUB.LAW.TAX_FINANCIAL_REGULATION.FINANCIAL_CONSUMER_COMPLIANCE_DOCUMENTS	Financial consumer compliance documents
659	SUB.LAW.TORTS_LIABILITY_INSURANCE	Torts liability and insurance law

Life sciences / 생명과학 — 22 codes

Exact index	Code	Name
660	SUB.LIFE_SCIENCE	Life sciences
661	SUB.LIFE_SCIENCE.BIOINFORMATICS_COMPUTATIONAL_BIOLOGY	Bioinformatics and computational biology
662	SUB.LIFE_SCIENCE.BIOLOGICAL_SCIENCE_FOUNDATIONS	Biological science foundations
663	SUB.LIFE_SCIENCE.BOTANY	Botany
664	SUB.LIFE_SCIENCE.BOTANY.HERBARIUM_PLANT_SPECIMEN_RECORDS	Herbarium and plant specimen records
665	SUB.LIFE_SCIENCE.CONSERVATION_BIOLOGY_BIODIVERSITY	Conservation biology and biodiversity
666	SUB.LIFE_SCIENCE.DEVELOPMENTAL_BIOLOGY	Developmental biology
667	SUB.LIFE_SCIENCE.ECOLOGY_EVOLUTION	Ecology and evolution
668	SUB.LIFE_SCIENCE.ECOLOGY_FIELD_SURVEYS	Ecology field surveys
669	SUB.LIFE_SCIENCE.GENETICS_GENOMICS	Genetics and genomics
670	SUB.LIFE_SCIENCE.GENETICS_GENOMICS.SEQUENCE_VARIANT_ANNOTATION	Sequence and variant annotation
671	SUB.LIFE_SCIENCE.IMMUNOLOGY	Immunology
672	SUB.LIFE_SCIENCE.MARINE_AQUATIC_BIOLOGY	Marine and aquatic biology
673	SUB.LIFE_SCIENCE.MICROBIOLOGY	Microbiology
674	SUB.LIFE_SCIENCE.MICROBIOLOGY.MICROBIOLOGY_CULTURE_TEST_RECORDS	Microbiology culture test records
675	SUB.LIFE_SCIENCE.MOLECULAR_CELL	Molecular and cell biology
676	SUB.LIFE_SCIENCE.MOLECULAR_CELL.CELL_ASSAY_PROTOCOLS	Cell assay protocols
677	SUB.LIFE_SCIENCE.NEUROSCIENCE_BEHAVIOR	Neuroscience and animal behavior
678	SUB.LIFE_SCIENCE.PALEONTOLOGY	Paleontology
679	SUB.LIFE_SCIENCE.PHYSIOLOGY_ANATOMY_NONCLINICAL	Nonclinical physiology and anatomy
680	SUB.LIFE_SCIENCE.SYNTHETIC_BIOLOGY_BIOTECHNOLOGY	Synthetic biology and biotechnology
681	SUB.LIFE_SCIENCE.ZOOLOGY	Zoology

SUB.LITERATURE / 문학 — 39 codes

Exact index	Code	Name
682	SUB.LITERATURE	SUB.LITERATURE
683	SUB.LITERATURE.DIARY_LETTER_TRAVEL_WRITING	Diary letters and travel writing
684	SUB.LITERATURE.DIARY_LETTER_TRAVEL_WRITING.TRAVEL_MEMOIR_LITERARY_PROSE	Travel memoir and literary travel prose
685	SUB.LITERATURE.DRAMA	Drama
686	SUB.LITERATURE.DRAMA.SCRIPT_SCREENPLAY	Script and screenplay literature
687	SUB.LITERATURE.DRAMA.SCRIPT_SCREENPLAY.TV_FILM_SCRIPT_NARRATIVE	TV film and screenplay narrative
688	SUB.LITERATURE.DRAMA.THEATRE_DRAMA_TEXT	Theatre drama text
689	SUB.LITERATURE.ESSAY	Essay
690	SUB.LITERATURE.FICTION	Fiction and narrative literature
691	SUB.LITERATURE.FICTION.CHILDREN_YA_FICTION	Children's and young adult fiction
692	SUB.LITERATURE.FICTION.COMICS_GRAPHIC_NARRATIVE	Comics and graphic narrative
693	SUB.LITERATURE.FICTION.GENRE_FICTION	Genre fiction
694	SUB.LITERATURE.FICTION.GENRE_FICTION.MYSTERY_CRIME_THRILLER	Mystery, crime, and thriller fiction
695	SUB.LITERATURE.FICTION.GENRE_FICTION.ROMANCE_COMMERCIAL_FICTION	Romance and commercial fiction
696	SUB.LITERATURE.FICTION.GENRE_FICTION.SPECULATIVE_SCIENCE_FANTASY	Speculative fiction (science fiction and fantasy)
697	SUB.LITERATURE.FICTION.NOVEL_LONG_FORM	Novel and long-form fiction
698	SUB.LITERATURE.FICTION.SHORT_STORY_NOVELLA	Short story and novella
699	SUB.LITERATURE.GENERAL_LITERARY_STUDIES	General literary studies
700	SUB.LITERATURE.HUMOR_SATIRE	Humor and satire
701	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS	Language and regional literary traditions
702	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.CHINESE_LITERATURE	Chinese literature
703	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.CHINESE_LITERATURE.CLASSICAL_CHINESE_TEXTS_COMMENTARY	Classical Chinese Texts and Commentary
704	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.ENGLISH_LITERATURE	English-language literature
705	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.ENGLISH_LITERATURE.ENGLISH_MODERN_FICTION	English modern fiction
706	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.JAPANESE_LITERATURE	Japanese literature
707	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.KOREAN_LITERATURE	Korean literature
708	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.KOREAN_LITERATURE.KOREAN_CLASSICAL_POETRY_SIJO	Korean classical poetry and sijo
709	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.KOREAN_LITERATURE.KOREAN_WEB_NOVEL_SERIALS	Korean web novels and serial fiction
710	SUB.LITERATURE.LANGUAGE_LITERARY_TRADITIONS.TRANSLATED_WORLD_LITERATURE	Translated world literature
711	SUB.LITERATURE.LITERARY_CRITICISM	Literary criticism
712	SUB.LITERATURE.LITERARY_CRITICISM.REVIEW_ANNOTATED_COMMENTARY	Literary review and annotated commentary
713	SUB.LITERATURE.LITERARY_THEORY_HISTORY	Literary theory history and criticism
714	SUB.LITERATURE.POETRY	Poetry
715	SUB.LITERATURE.POETRY.EPIC_NARRATIVE_POETRY	Epic and narrative poetry
716	SUB.LITERATURE.POETRY.FREE_VERSE_SPOKEN_WORD	Free verse and spoken word poetry
717	SUB.LITERATURE.POETRY.LYRIC_POETRY	Lyric poetry
718	SUB.LITERATURE.REPORTAGE_MISC	Reportage and miscellaneous literary prose
719	SUB.LITERATURE.RHETORIC_WRITING	Rhetoric and literary writing
720	SUB.LITERATURE.SPEECH_ORATORY	Speech and oratory

Mathematics and statistics / 수학과 통계 — 17 codes

Exact index	Code	Name
721	SUB.MATH_STATS	Mathematics and statistics
722	SUB.MATH_STATS.ALGEBRA_STRUCTURES	Algebra and algebraic structures
723	SUB.MATH_STATS.ANALYSIS_DIFFERENTIAL_EQUATIONS	Analysis and differential equations
724	SUB.MATH_STATS.APPLIED_MATH	SUB.MATH_STATS.APPLIED_MATH
725	SUB.MATH_STATS.ARITHMETIC_NUMBER_THEORY	Arithmetic and number theory
726	SUB.MATH_STATS.DISCRETE_COMBINATORICS_GRAPH	Discrete mathematics combinatorics and graph theory
727	SUB.MATH_STATS.GEOMETRY_TOPOLOGY	Geometry topology and spatial mathematics
728	SUB.MATH_STATS.INFORMATION_THEORY_CYBERNETICS	Information theory and mathematical cybernetics
729	SUB.MATH_STATS.LOGIC_SET_FOUNDATIONS	Logic set theory and foundations
730	SUB.MATH_STATS.MATHEMATICAL_FOUNDATIONS	Mathematical foundations
731	SUB.MATH_STATS.NUMERICAL_COMPUTATIONAL_MATH	Numerical and computational mathematics
732	SUB.MATH_STATS.OPTIMIZATION_OPERATIONS_RESEARCH	Optimization operations research and game theory
733	SUB.MATH_STATS.PROBABILITY	Probability
734	SUB.MATH_STATS.PURE_MATH	Pure mathematics
735	SUB.MATH_STATS.STATISTICAL_DATA_DEMOGRAPHICS	Statistical data collections and demographics
736	SUB.MATH_STATS.STATISTICAL_THEORY_METHODS	Statistical theory and methods
737	SUB.MATH_STATS.STATISTICS	Statistics

Media and communication / 미디어와 커뮤니케이션 — 48 codes

Exact index	Code	Name
738	SUB.MEDIA_COMM	Media and communication
739	SUB.MEDIA_COMM.ADVERTISING_PR	Advertising and public relations
740	SUB.MEDIA_COMM.AUDIENCE_RECEPTION_MEDIA_EFFECTS	Audience reception and media effects
741	SUB.MEDIA_COMM.AUDIENCE_RECEPTION_MEDIA_EFFECTS.FAN_STUDIES_RECEPTION_COMMUNITIES	Fan studies reception and audience communities
742	SUB.MEDIA_COMM.BROADCAST_MEDIA	Broadcast and screen media
743	SUB.MEDIA_COMM.BROADCAST_MEDIA.TELEVISION_STREAMING_PROGRAMS	Television streaming and screen programs
744	SUB.MEDIA_COMM.COMMUNICATION_RESEARCH_METHODS	Communication research methods
745	SUB.MEDIA_COMM.COMMUNICATION_THEORY_MEDIA_STUDIES	Communication theory and media studies
746	SUB.MEDIA_COMM.COMMUNICATION_THEORY_MEDIA_STUDIES.POPULAR_CULTURE_STUDIES	Popular culture studies
747	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES	Digital platforms and online communities
748	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.COMMUNITY_FORUM_DISCUSSION_CULTURE	Community forum discussion culture
749	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.COMMUNITY_MODERATION_GOVERNANCE	Community moderation and platform governance
750	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.COMMUNITY_TRUST_SAFETY_OPERATIONS	Community trust and safety operations
751	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.CONTENT_MODERATION_POLICY	Content moderation policy
752	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.CREATOR_COMMUNITY_MANAGEMENT	Creator community management
753	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.ONLINE_QA_KNOWLEDGE_EXCHANGE	Online Q&A and knowledge exchange
754	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.ONLINE_REPUTATION_RATING_SYSTEMS	Online reputation and rating systems
755	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.PLATFORM_GOVERNANCE_POLICY	Platform governance and policy
756	SUB.MEDIA_COMM.DIGITAL_PLATFORMS_ONLINE_COMMUNITIES.PLATFORM_MODERATION_GOVERNANCE	Platform moderation governance
757	SUB.MEDIA_COMM.MEDIA_INDUSTRIES_PRODUCTION	Media industries and content production
758	SUB.MEDIA_COMM.MEDIA_INDUSTRIES_PRODUCTION.CONTENT_PRODUCTION_WORKFLOWS	Content production workflows
759	SUB.MEDIA_COMM.MEDIA_INDUSTRIES_PRODUCTION.PODCAST_AUDIO_MEDIA_PRODUCTION	Podcast and audio media production
760	SUB.MEDIA_COMM.MEDIA_INDUSTRIES_PRODUCTION.PODCAST_TRANSCRIPTS_SHOW_NOTES	Podcast transcripts and show notes
761	SUB.MEDIA_COMM.MEDIA_LITERACY_INFORMATION_DISORDER	Media literacy and information disorder
762	SUB.MEDIA_COMM.MEDIA_LITERACY_INFORMATION_DISORDER.MISINFORMATION_DISINFORMATION_VERIFICATION	Misinformation, disinformation, and verification
763	SUB.MEDIA_COMM.MEDIA_POLICY_ETHICS_REGULATION	Media policy ethics and regulation
764	SUB.MEDIA_COMM.NEWS_JOURNALISM	News and journalism
765	SUB.MEDIA_COMM.NEWS_JOURNALISM.FACT_CHECKING_VERIFICATION	Fact-checking and verification
766	SUB.MEDIA_COMM.NEWS_JOURNALISM.NEWS_ARTICLE_WIRE_COPY	News articles and wire copy
767	SUB.MEDIA_COMM.NEWS_JOURNALISM.REPORTING_NEWSWRITING	Reporting and newswriting
768	SUB.MEDIA_COMM.POLITICAL_COMMUNICATION_PUBLIC_OPINION	Political communication and public opinion media
769	SUB.MEDIA_COMM.POLITICAL_COMMUNICATION_PUBLIC_OPINION.POLITICAL_COMMENT_THREAD_DEBATE	Political comment thread and debate
770	SUB.MEDIA_COMM.PUBLISHING_BOOK_TRADE	Publishing and book trade
771	SUB.MEDIA_COMM.PUBLISHING_BOOK_TRADE.MAGAZINE_EDITORIAL_FEATURES	Magazine editorial features
772	SUB.MEDIA_COMM.PUBLISHING_BOOK_TRADE.MAGAZINE_PERIODICAL_PUBLISHING	Magazine and periodical publishing
773	SUB.MEDIA_COMM.PUBLISHING_BOOK_TRADE.NEWSLETTER_SERIAL_EDITORIAL_WORK	Newsletter and serial editorial work
774	SUB.MEDIA_COMM.SOCIAL_MEDIA	Social media
775	SUB.MEDIA_COMM.SOCIAL_MEDIA.CREATOR_INFLUENCER_CULTURE	Creator and influencer culture
776	SUB.MEDIA_COMM.SOCIAL_MEDIA.INFLUENCER_CREATOR_COMMUNICATION	Influencer and creator communication
777	SUB.MEDIA_COMM.SOCIAL_MEDIA.LIVE_STREAM_CHAT_COMMUNITIES	Live stream chat communities
778	SUB.MEDIA_COMM.SOCIAL_MEDIA.SOCIAL_POST_COMMENT_DISCUSSION	Social post and comment discussion
779	SUB.MEDIA_COMM.SOCIAL_MEDIA.VIRAL_MEME_PARTICIPATION_CULTURE	Viral meme and participation culture
780	SUB.MEDIA_COMM.TELECOMMUNICATIONS	Telecommunications and network services
781	SUB.MEDIA_COMM.TELECOMMUNICATIONS.BROADBAND_INSTALLATION_REPAIR_ORDERS	Broadband installation and repair orders
782	SUB.MEDIA_COMM.TELECOMMUNICATIONS.DEVICE_ACTIVATION_SIM_PROVISIONING	Device activation and SIM provisioning
783	SUB.MEDIA_COMM.TELECOMMUNICATIONS.MOBILE_PLAN_BILLING_RECORDS	Mobile plan and billing records
784	SUB.MEDIA_COMM.TELECOMMUNICATIONS.NETWORK_OUTAGE_SERVICE_STATUS	Network outage and service status
785	SUB.MEDIA_COMM.TELECOMMUNICATIONS.TELECOM_REGULATORY_COMPLIANCE_FILINGS	Telecom regulatory and compliance filings

Music / 음악 — 38 codes

Exact index	Code	Name
786	SUB.MUSIC	Music
787	SUB.MUSIC.COMPOSITION	Composition
788	SUB.MUSIC.COMPOSITION.ORCHESTRATION_ARRANGING	Orchestration and arranging
789	SUB.MUSIC.COMPOSITION.SONG_FORM_ARRANGEMENT	Song form and arrangement
790	SUB.MUSIC.HISTORY_STYLES_TRADITIONS	Music history styles and traditions
791	SUB.MUSIC.HISTORY_STYLES_TRADITIONS.CLASSICAL_ART_MUSIC	Classical art music
792	SUB.MUSIC.HISTORY_STYLES_TRADITIONS.JAZZ_IMPROVISATION	Jazz and improvisation
793	SUB.MUSIC.HISTORY_STYLES_TRADITIONS.POPULAR_MUSIC_STUDIES	Popular music studies
794	SUB.MUSIC.HISTORY_STYLES_TRADITIONS.TRADITIONAL_FOLK_WORLD_MUSIC	Traditional folk and world music
795	SUB.MUSIC.INSTRUMENTAL_ENSEMBLE_MUSIC	Instrumental and ensemble music
796	SUB.MUSIC.INSTRUMENTAL_ENSEMBLE_MUSIC.ORCHESTRA_CHAMBER_ENSEMBLE	Orchestra chamber and ensemble music
797	SUB.MUSIC.INSTRUMENT_FAMILIES_TECHNIQUE	Instrument families and technique
798	SUB.MUSIC.INSTRUMENT_FAMILIES_TECHNIQUE.KEYBOARD_INSTRUMENTS	Keyboard instruments and technique
799	SUB.MUSIC.INSTRUMENT_FAMILIES_TECHNIQUE.STRINGS_WIND_BRASS_PERCUSSION	String wind brass and percussion technique
800	SUB.MUSIC.MUSIC_EDUCATION_INSTITUTIONS	Music education and institutions
801	SUB.MUSIC.MUSIC_EDUCATION_INSTITUTIONS.MUSIC_EDUCATION_METHOD_MATERIALS	Music education method materials
802	SUB.MUSIC.MUSIC_EDUCATION_INSTITUTIONS.MUSIC_PEDAGOGY_PRACTICE	Music pedagogy and practice
803	SUB.MUSIC.MUSIC_THEORY_HISTORY	Music theory history and criticism
804	SUB.MUSIC.NOTATION	Notation and scores
805	SUB.MUSIC.NOTATION.MUSICXML_DIGITAL_NOTATION	MusicXML digital notation
806	SUB.MUSIC.NOTATION.MUSIC_NOTATION_ENCODING	Music notation encoding
807	SUB.MUSIC.NOTATION.SCORE_EDITING_PUBLISHING	Score editing and publishing
808	SUB.MUSIC.NOTATION.SHEET_MUSIC_SCORE_ANALYSIS	Sheet music and score analysis
809	SUB.MUSIC.PERFORMANCE	Music performance
810	SUB.MUSIC.PERFORMANCE.PERFORMANCE_PART_PRACTICE_NOTES	Performance part and practice notes
811	SUB.MUSIC.PERFORMANCE.PERFORMANCE_PRACTICE_INTERPRETATION	Music performance practice and interpretation
812	SUB.MUSIC.RECORDING_PRODUCTION_INDUSTRY	Music recording production and industry
813	SUB.MUSIC.RECORDING_PRODUCTION_INDUSTRY.RECORDING_MIXING_MASTERING	Recording, mixing, and mastering
814	SUB.MUSIC.RELIGIOUS_CEREMONIAL_MUSIC	Religious and ceremonial music
815	SUB.MUSIC.SONGWRITING	Lyrics and songwriting
816	SUB.MUSIC.SONGWRITING.LYRICS_TEXT_RIGHTS_CONTEXT	Lyrics text and rights context
817	SUB.MUSIC.SONGWRITING.LYRICS_TEXT_SETTING	Lyrics and songwriting - text setting
818	SUB.MUSIC.STAGE_DRAMATIC_MUSIC	Stage and dramatic music
819	SUB.MUSIC.THEORY_ANALYSIS	Music theory and analysis
820	SUB.MUSIC.THEORY_ANALYSIS.HARMONY_COUNTERPOINT_FORM	Harmony, counterpoint, and form
821	SUB.MUSIC.THEORY_ANALYSIS.RHYTHM_METER_ANALYSIS	Rhythm and meter analysis
822	SUB.MUSIC.VOCAL_CHORAL_MUSIC	Vocal and choral music
823	SUB.MUSIC.VOCAL_CHORAL_MUSIC.SONG_VOICE_VOCAL_TECHNIQUE	Song, voice, and vocal technique

Natural sciences aggregate / 자연과학 종합 — 26 codes

Exact index	Code	Name
824	SUB.NATURAL_SCIENCES	Natural sciences aggregate
825	SUB.NATURAL_SCIENCES.EXPERIMENTAL_DESIGN_REPRODUCIBILITY	Experimental design reproducibility and protocols
826	SUB.NATURAL_SCIENCES.EXPERIMENTAL_DESIGN_REPRODUCIBILITY.EXPERIMENTAL_PROTOCOLS_REPLICATION	Experimental protocols and replication
827	SUB.NATURAL_SCIENCES.FIELD_STUDIES_NATURAL_HISTORY	Field studies and natural history
828	SUB.NATURAL_SCIENCES.HISTORY	History of science
829	SUB.NATURAL_SCIENCES.INTERDISCIPLINARY_COMPLEX_SYSTEMS	Interdisciplinary natural science and complex systems
830	SUB.NATURAL_SCIENCES.MEASUREMENT_OBSERVATION_INSTRUMENTATION	Scientific measurement observation and instrumentation
831	SUB.NATURAL_SCIENCES.MEASUREMENT_OBSERVATION_INSTRUMENTATION.INSTRUMENT_CALIBRATION_MEASUREMENT_LOGS	Instrument calibration and measurement logs
832	SUB.NATURAL_SCIENCES.MEASUREMENT_OBSERVATION_INSTRUMENTATION.SENSOR_TELEMETRY_MEASUREMENT_STREAMS	Sensor telemetry and measurement streams
833	SUB.NATURAL_SCIENCES.METHODS_EDUCATION	Science methods and education
834	SUB.NATURAL_SCIENCES.NATURAL_SCIENCE_FOUNDATIONS	Natural science foundations
835	SUB.NATURAL_SCIENCES.PHILOSOPHY_THEORY	Philosophy and theory of science
836	SUB.NATURAL_SCIENCES.RESEARCH_ETHICS_INTEGRITY_SAFETY	Scientific ethics integrity and research safety
837	SUB.NATURAL_SCIENCES.RESEARCH_ETHICS_INTEGRITY_SAFETY.LAB_SAFETY_INCIDENT_REPORTS	Lab safety incident reports
838	SUB.NATURAL_SCIENCES.SCIENCE_COMMUNICATION_PUBLIC_UNDERSTANDING	Science communication and public understanding
839	SUB.NATURAL_SCIENCES.SCIENTIFIC_CLASSIFICATION_TAXONOMY	Scientific classification taxonomy and ordering
840	SUB.NATURAL_SCIENCES.SCIENTIFIC_COLLECTIONS_SPECIMENS	Scientific collections specimens and samples
841	SUB.NATURAL_SCIENCES.SCIENTIFIC_COLLECTIONS_SPECIMENS.SPECIMEN_LABEL_CATALOG_RECORDS	Specimen label catalog records
842	SUB.NATURAL_SCIENCES.SCIENTIFIC_DATA_MODELING_SIMULATION	Scientific data modeling and simulation
843	SUB.NATURAL_SCIENCES.SCIENTIFIC_DATA_MODELING_SIMULATION.EXPERIMENT_MEASUREMENT_OBSERVATION_TABLES	Experiment measurement and observation tables
844	SUB.NATURAL_SCIENCES.SCIENTIFIC_DATA_MODELING_SIMULATION.LAB_INSTRUMENT_RESULT_EXPORTS	Lab instrument result exports
845	SUB.NATURAL_SCIENCES.SCIENTIFIC_DATA_MODELING_SIMULATION.RESEARCH_DATA_ANALYSIS_PIPELINES	Research data analysis pipelines
846	SUB.NATURAL_SCIENCES.SCIENTIFIC_INSTITUTIONS_COMMUNITIES	Scientific institutions communities and collaboration
847	SUB.NATURAL_SCIENCES.SCIENTIFIC_REFERENCE_TERMINOLOGY	Scientific reference terminology and nomenclature
848	SUB.NATURAL_SCIENCES.SCIENTIFIC_RESEARCH_PRACTICE	Scientific research practice
849	SUB.NATURAL_SCIENCES.SCIENTIFIC_RESEARCH_PRACTICE.RESEARCH_METADATA_SAMPLE_SHEETS	Research metadata and sample sheets

Physics / 물리학 — 20 codes

Exact index	Code	Name
850	SUB.PHYSICS	Physics
851	SUB.PHYSICS.ASTROPHYSICS_COSMOLOGY	Astrophysics and cosmology
852	SUB.PHYSICS.ATOMIC_MOLECULAR_PHYSICS	Atomic and molecular physics
853	SUB.PHYSICS.BIOPHYSICS	Biophysics
854	SUB.PHYSICS.CLASSICAL_MECHANICS	Classical mechanics
855	SUB.PHYSICS.CLASSICAL_MECHANICS.MECHANICS_PROBLEM_SOLUTIONS	Mechanics problem solutions
856	SUB.PHYSICS.CONDENSED_MATTER	Condensed matter
857	SUB.PHYSICS.CONDENSED_MATTER.MATERIAL_PROPERTY_DATA	Material property data
858	SUB.PHYSICS.EXPERIMENTAL_INSTRUMENTATION	Experimental physics and instrumentation
859	SUB.PHYSICS.EXPERIMENTAL_INSTRUMENTATION.PHYSICS_LAB_NOTEBOOKS	Physics lab notebooks
860	SUB.PHYSICS.NUCLEAR_PHYSICS	Nuclear physics
861	SUB.PHYSICS.OPTICS_EM	Optics and electromagnetism
862	SUB.PHYSICS.OPTICS_EM.SPECTROSCOPY_LASER_MEASUREMENTS	Spectroscopy laser and EM measurements
863	SUB.PHYSICS.PHYSICS_FOUNDATIONS	Physics foundations
864	SUB.PHYSICS.PLASMA_PHYSICS	Plasma physics
865	SUB.PHYSICS.QUANTUM_PARTICLES	Quantum and particles
866	SUB.PHYSICS.QUANTUM_PARTICLES.PARTICLE_COLLISION_EVENT_DATA	Particle collision event data
867	SUB.PHYSICS.RELATIVITY_GRAVITATION	Relativity and gravitation
868	SUB.PHYSICS.STATISTICAL_PHYSICS_COMPLEX_SYSTEMS	Statistical physics and complex systems
869	SUB.PHYSICS.THERMODYNAMICS_WAVES	Thermodynamics waves and acoustics

Politics and public administration / 정치와 행정 — 22 codes

Exact index	Code	Name
870	SUB.POLITICS	Politics and public administration
871	SUB.POLITICS.CIVIC_PARTICIPATION_SOCIAL_MOVEMENTS	Civic participation and social movements
872	SUB.POLITICS.CIVIC_PARTICIPATION_SOCIAL_MOVEMENTS.CAMPAIGN_DIGITAL_DISCUSSION_COMMUNITIES	Campaign digital discussion communities
873	SUB.POLITICS.COMPARATIVE_POLITICS_DEMOCRATIZATION	Comparative politics and democratization
874	SUB.POLITICS.CONFLICT_PEACE_SECURITY_STUDIES	Conflict peace and security studies
875	SUB.POLITICS.DEFENSE_SECURITY	Defense and security policy
876	SUB.POLITICS.ELECTIONS_PARTIES	Elections and parties
877	SUB.POLITICS.ELECTIONS_PARTIES.ELECTION_CAMPAIGN_MATERIALS	Election and campaign materials
878	SUB.POLITICS.GOVERNMENT_ADMIN	Government and administration
879	SUB.POLITICS.GOVERNMENT_ADMIN.PUBLIC_PROCUREMENT_NOTICES	Public procurement notices
880	SUB.POLITICS.INTERNATIONAL_RELATIONS	International relations
881	SUB.POLITICS.LEGISLATIVE_PARLIAMENTARY_STUDIES	Legislative and parliamentary studies
882	SUB.POLITICS.LOCAL_GOVERNANCE_URBAN_POLICY	Local governance and urban policy
883	SUB.POLITICS.POLITICAL_SYSTEMS_GOVERNANCE	Political systems and governance
884	SUB.POLITICS.POLITICAL_THEORY_IDEOLOGY	Political theory and ideology
885	SUB.POLITICS.PUBLIC_ADMINISTRATION_BUREAUCRACY	Public administration and bureaucracy
886	SUB.POLITICS.PUBLIC_ADMINISTRATION_BUREAUCRACY.ADMINISTRATIVE_FORM_INSTRUCTIONS	Administrative form instructions
887	SUB.POLITICS.PUBLIC_ADMINISTRATION_BUREAUCRACY.GOVERNMENT_SERVICE_GUIDANCE	Government service guidance
888	SUB.POLITICS.PUBLIC_OPINION_POLLING	Public opinion and polling
889	SUB.POLITICS.PUBLIC_OPINION_POLLING.PUBLIC_COMMENT_CONSULTATION_SUBMISSIONS	Public comment and consultation submissions
890	SUB.POLITICS.PUBLIC_POLICY	Public policy
891	SUB.POLITICS.PUBLIC_POLICY.PUBLIC_POLICY_WHITE_PAPERS	Public policy white papers

Religion and belief / 종교와 신앙 — 47 codes

Exact index	Code	Name
892	SUB.RELIGION	Religion and belief
893	SUB.RELIGION.ANCIENT_CLASSICAL_RELIGIONS	Ancient and classical religious traditions
894	SUB.RELIGION.BUDDHISM	Buddhism
895	SUB.RELIGION.BUDDHISM.BUDDHIST_DOCTRINE_PRACTICE	Buddhist doctrine and practice
896	SUB.RELIGION.BUDDHISM.DHARMA_TALKS_TEMPLE_TEACHING	Dharma talks and temple teaching
897	SUB.RELIGION.BUDDHISM.TEMPLE_SERVICE_RITUAL_NOTICES	Temple service and ritual notices
898	SUB.RELIGION.CHRISTIANITY	Christianity
899	SUB.RELIGION.CHRISTIANITY.BIBLE_STUDY_SMALL_GROUP_MATERIALS	Bible study and small group materials
900	SUB.RELIGION.CHRISTIANITY.CHRISTIAN_DOCTRINE_PRACTICE	Christian doctrine and practice
901	SUB.RELIGION.CHRISTIANITY.CHURCH_HISTORY_INSTITUTIONS	Christian church history and institutions
902	SUB.RELIGION.CHRISTIANITY.CHURCH_LITURGY_MUSIC_PLANNING	Church liturgy and music planning
903	SUB.RELIGION.CHRISTIANITY.SERMONS_HOMILIES	Sermons and homilies
904	SUB.RELIGION.COMPARATIVE_RELIGION	Comparative religion
905	SUB.RELIGION.COMPARATIVE_RELIGION.INTERFAITH_COMPARATIVE_THEMES	Interfaith and comparative religious themes
906	SUB.RELIGION.EAST_ASIAN_RELIGIONS	East Asian religious traditions
907	SUB.RELIGION.EAST_ASIAN_RELIGIONS.CONFUCIAN_CLASSICS_COMMENTARY	Confucian classics and commentary
908	SUB.RELIGION.EAST_ASIAN_RELIGIONS.CONFUCIAN_DAOIST_TRADITIONS	Confucian and Daoist traditions
909	SUB.RELIGION.EAST_ASIAN_RELIGIONS.DAOIST_RITUAL_TEXTS	Daoist ritual texts
910	SUB.RELIGION.INDIGENOUS_FOLK_NEW_MOVEMENTS	Indigenous folk and new religious movements
911	SUB.RELIGION.INDIGENOUS_FOLK_NEW_MOVEMENTS.FOLK_SPIRITUAL_PRACTICE_DOCUMENTATION	Folk spiritual practice documentation
912	SUB.RELIGION.INDIGENOUS_FOLK_NEW_MOVEMENTS.NEW_RELIGIOUS_MOVEMENTS_SPIRITUALITY	New Religious Movements and Spirituality
913	SUB.RELIGION.ISLAM	Islam
914	SUB.RELIGION.ISLAM.ISLAMIC_DOCTRINE_PRACTICE	Islamic doctrine and practice
915	SUB.RELIGION.ISLAM.PRAYER_FASTING_COMMUNITY_GUIDANCE	Prayer, fasting, and community guidance in Islam
916	SUB.RELIGION.ISLAM.QURAN_HADITH_STUDY_NOTES	Quran and hadith study notes
917	SUB.RELIGION.JUDAISM	Judaism
918	SUB.RELIGION.JUDAISM.JEWISH_DOCTRINE_PRACTICE	Jewish doctrine and practice
919	SUB.RELIGION.RELIGION_SOCIETY	Religion and society
920	SUB.RELIGION.RELIGION_SOCIETY.RELIGION_POLITICS_PUBLIC_LIFE	Religion politics and public life
921	SUB.RELIGION.RELIGION_SOCIETY.RELIGIOUS_EDUCATION_CATECHESIS	Religious education and catechesis
922	SUB.RELIGION.RELIGION_SOCIETY.RELIGIOUS_ORGANIZATION_ADMINISTRATION	Religious organization administration
923	SUB.RELIGION.RELIGIOUS_TRADITIONS	Religious traditions
924	SUB.RELIGION.RITUAL_PRACTICE	Ritual and practice
925	SUB.RELIGION.RITUAL_PRACTICE.DEVOTIONAL_PRAYER_MATERIALS	Devotional and prayer materials
926	SUB.RELIGION.RITUAL_PRACTICE.PILGRIMAGE_SACRED_PLACES	Pilgrimage and sacred places
927	SUB.RELIGION.RITUAL_PRACTICE.PRAYER_WORSHIP_LITURGY	Prayer, worship, and liturgy
928	SUB.RELIGION.RITUAL_PRACTICE.WORSHIP_SERVICE_BULLETINS	Worship service bulletins
929	SUB.RELIGION.SCRIPTURE_STUDIES	Scripture studies
930	SUB.RELIGION.SCRIPTURE_STUDIES.BIBLICAL_STUDIES	Biblical studies
931	SUB.RELIGION.SCRIPTURE_STUDIES.BUDDHIST_CANON_STUDIES	Buddhist Canon Studies
932	SUB.RELIGION.SCRIPTURE_STUDIES.SCRIPTURE_COMMENTARY_EXEGESIS	Scripture commentary and exegesis
933	SUB.RELIGION.SCRIPTURE_STUDIES.SCRIPTURE_TRANSLATION_STUDY_NOTES	Scripture translation and study notes
934	SUB.RELIGION.SOUTH_ASIAN_RELIGIONS	South Asian religious traditions
935	SUB.RELIGION.SOUTH_ASIAN_RELIGIONS.HINDU_TRADITIONS	Hindu traditions
936	SUB.RELIGION.THEOLOGY_DOCTRINE	Theology and doctrine
937	SUB.RELIGION.THEOLOGY_DOCTRINE.ETHICS_MORAL_TEACHING	Ethics and moral teaching
938	SUB.RELIGION.THEOLOGY_DOCTRINE.SYSTEMATIC_PHILOSOPHICAL_THEOLOGY	Systematic and philosophical theology

Society and culture / 사회와 문화 — 21 codes

Exact index	Code	Name
939	SUB.SOCIETY	Society and culture
940	SUB.SOCIETY.ANTHROPOLOGY	Anthropology
941	SUB.SOCIETY.COMMUNITY_WELFARE	Community and welfare
942	SUB.SOCIETY.CRIMINOLOGY	Criminology and crime phenomena
943	SUB.SOCIETY.CULTURE_CIVILIZATION	Culture and civilization studies
944	SUB.SOCIETY.CUSTOMS_ETIQUETTE	Customs and etiquette
945	SUB.SOCIETY.DEMOGRAPHY	Demography and family
946	SUB.SOCIETY.GENDER_FAMILY_STUDIES	Gender and family studies
947	SUB.SOCIETY.INEQUALITY_SOCIAL_STRATIFICATION	Inequality and social stratification
948	SUB.SOCIETY.MIGRATION_DIASPORA_TRANSNATIONALISM	Migration diaspora and transnationalism
949	SUB.SOCIETY.ORGANIZATIONS_ASSOCIATIONS	Organizations and associations
950	SUB.SOCIETY.RACE_ETHNICITY_IDENTITY	Race ethnicity and identity studies
951	SUB.SOCIETY.SOCIAL_NETWORKS_RELATIONSHIPS	Social networks and relationships
952	SUB.SOCIETY.SOCIAL_RESEARCH_METHODS	Social research methods
953	SUB.SOCIETY.SOCIAL_RESEARCH_METHODS.SURVEY_RESPONSE_TABULATION_DATASETS	Survey response tabulation datasets
954	SUB.SOCIETY.SOCIAL_SCIENCE_FOUNDATIONS	Social science foundations
955	SUB.SOCIETY.SOCIAL_WORK_PRACTICE_SERVICES	Social work practice and services
956	SUB.SOCIETY.SOCIAL_WORK_PRACTICE_SERVICES.COMMUNITY_SERVICE_REFERRAL_DIALOGUES	Community service referral dialogues
957	SUB.SOCIETY.SOCIAL_WORK_PRACTICE_SERVICES.SOCIAL_WORK_CASE_CONVERSATIONS	Social work case conversations
958	SUB.SOCIETY.SOCIOLOGY	Sociology
959	SUB.SOCIETY.URBAN_RURAL_COMMUNITY_STUDIES	Urban rural and community studies

Sports and recreation / 스포츠와 여가 — 36 codes

Exact index	Code	Name
960	SUB.SPORTS_RECREATION	Sports and recreation
961	SUB.SPORTS_RECREATION.COMBAT_TARGET_EQUESTRIAN_SPORTS	Combat, target, and equestrian sports
962	SUB.SPORTS_RECREATION.COMBAT_TARGET_EQUESTRIAN_SPORTS.MARTIAL_ARTS_COMBAT_SPORTS	Martial arts and combat sports
963	SUB.SPORTS_RECREATION.COMBAT_TARGET_EQUESTRIAN_SPORTS.TARGET_SHOOTING_ARCHERY	Target shooting and archery
964	SUB.SPORTS_RECREATION.ENTERTAINMENT	Entertainment
965	SUB.SPORTS_RECREATION.ENTERTAINMENT.FAN_CULTURE_RECREATIONAL_MEDIA	Fan culture and recreational media
966	SUB.SPORTS_RECREATION.EXERCISE_FITNESS	Exercise and fitness
967	SUB.SPORTS_RECREATION.EXERCISE_FITNESS.WORKOUT_PROGRAMS_FITNESS_TRAINING	Workout programs and fitness training
968	SUB.SPORTS_RECREATION.EXERCISE_FITNESS.WORKOUT_PROGRAMS_FITNESS_TRAINING.WORKOUT_LOG_PROGRAMS	Workout programs and fitness training workout logs
969	SUB.SPORTS_RECREATION.EXERCISE_FITNESS.YOGA_PILATES_MIND_BODY_FITNESS	Yoga Pilates and mind-body fitness
970	SUB.SPORTS_RECREATION.GAMES_HOBBIES	Games and hobbies
971	SUB.SPORTS_RECREATION.GAMES_HOBBIES.PUZZLES_BRAIN_GAMES	Puzzles and brain games
972	SUB.SPORTS_RECREATION.GAMES_HOBBIES.TABLETOP_BOARD_GAMES	Tabletop and board games
973	SUB.SPORTS_RECREATION.GAMES_HOBBIES.VIDEO_GAMES_PLAY_CULTURE	Video games play culture and strategy
974	SUB.SPORTS_RECREATION.INDIVIDUAL_ATHLETIC_SPORTS	Individual athletic sports
975	SUB.SPORTS_RECREATION.INDIVIDUAL_ATHLETIC_SPORTS.RUNNING_TRACK_FIELD	Running track and field
976	SUB.SPORTS_RECREATION.INDIVIDUAL_ATHLETIC_SPORTS.SWIMMING_AQUATICS	Swimming and aquatics
977	SUB.SPORTS_RECREATION.OUTDOOR_ADVENTURE_TECHNICAL_SPORTS	Outdoor adventure and technical sports
978	SUB.SPORTS_RECREATION.OUTDOOR_ADVENTURE_TECHNICAL_SPORTS.CLIMBING_MOUNTAINEERING	Climbing and mountaineering
979	SUB.SPORTS_RECREATION.OUTDOOR_ADVENTURE_TECHNICAL_SPORTS.CYCLING	Cycling
980	SUB.SPORTS_RECREATION.OUTDOOR_ADVENTURE_TECHNICAL_SPORTS.HIKING_CAMPING_BACKPACKING	Hiking camping and backpacking
981	SUB.SPORTS_RECREATION.OUTDOOR_ADVENTURE_TECHNICAL_SPORTS.WINTER_WATER_SPORTS	Winter and water sports
982	SUB.SPORTS_RECREATION.SPORTS	Sports
983	SUB.SPORTS_RECREATION.SPORTS_FOUNDATIONS_TRAINING	Sports foundations and training
984	SUB.SPORTS_RECREATION.SPORTS_FOUNDATIONS_TRAINING.COACHING_TRAINING_METHODS	Coaching and training methods
985	SUB.SPORTS_RECREATION.SPORTS_FOUNDATIONS_TRAINING.RULES_OFFICIATING	Rules and officiating
986	SUB.SPORTS_RECREATION.SPORTS_FOUNDATIONS_TRAINING.SPORTS_STATISTICS_ANALYTICS	Sports statistics and analytics
987	SUB.SPORTS_RECREATION.TEAM_BALL_SPORTS	Team and ball sports
988	SUB.SPORTS_RECREATION.TEAM_BALL_SPORTS.BASEBALL_SOFTBALL	Baseball and softball
989	SUB.SPORTS_RECREATION.TEAM_BALL_SPORTS.BASKETBALL	Basketball
990	SUB.SPORTS_RECREATION.TEAM_BALL_SPORTS.FOOTBALL_SOCCER	Football and soccer
991	SUB.SPORTS_RECREATION.TEAM_BALL_SPORTS.VOLLEYBALL_NET_SPORTS	Volleyball and net sports
992	SUB.SPORTS_RECREATION.TRAVEL_LEISURE	Travel and leisure
993	SUB.SPORTS_RECREATION.TRAVEL_LEISURE.TOURISM_DESTINATION_GUIDES	Tourism and destination guides
994	SUB.SPORTS_RECREATION.TRAVEL_LEISURE.TOURISM_DESTINATION_GUIDES.TRAVEL_GUIDE_REVIEWS	Travel guide reviews
995	SUB.SPORTS_RECREATION.TRAVEL_LEISURE.TRAVEL_PLANNING_ITINERARIES	Travel planning and itineraries

Transportation and mobility / — 33 codes

Exact index	Code	Name
996	SUB.TRANSPORT_MOBILITY	Transportation and mobility
997	SUB.TRANSPORT_MOBILITY.AVIATION_OPERATIONS_PASSENGER_INFO	Aviation operations and passenger information
998	SUB.TRANSPORT_MOBILITY.AVIATION_OPERATIONS_PASSENGER_INFO.BAGGAGE_SECURITY_PASSENGER_RULES	Baggage security and passenger rules
999	SUB.TRANSPORT_MOBILITY.AVIATION_OPERATIONS_PASSENGER_INFO.FLIGHT_STATUS_DISRUPTION	Flight status and disruption information
1000	SUB.TRANSPORT_MOBILITY.FREIGHT_LOGISTICS_SHIPMENT_DOCUMENTATION	Freight logistics and shipment documentation
1001	SUB.TRANSPORT_MOBILITY.FREIGHT_LOGISTICS_SHIPMENT_DOCUMENTATION.CUSTOMS_SHIPPING_COMPLIANCE	Customs and shipping compliance
1002	SUB.TRANSPORT_MOBILITY.FREIGHT_LOGISTICS_SHIPMENT_DOCUMENTATION.LAST_MILE_DELIVERY_TRACKING	Last-mile delivery tracking
1003	SUB.TRANSPORT_MOBILITY.FREIGHT_LOGISTICS_SHIPMENT_DOCUMENTATION.SHIPMENT_MANIFEST_TRACKING_TABLES	Shipment manifest and tracking tables
1004	SUB.TRANSPORT_MOBILITY.MARITIME_PORT_SHIPPING_OPERATIONS	Maritime port and shipping operations
1005	SUB.TRANSPORT_MOBILITY.MARITIME_PORT_SHIPPING_OPERATIONS.NAVIGATION_SAFETY_NOTICE_MARITIME	Maritime navigation and safety notices
1006	SUB.TRANSPORT_MOBILITY.MARITIME_PORT_SHIPPING_OPERATIONS.PORT_CALL_CARGO_MANIFESTS	Port call and cargo manifests
1007	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION	Public transit service information
1008	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION.ACCESSIBILITY_PARATRANSIT_INFORMATION	Accessibility and paratransit information
1009	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION.FARE_PASS_PAYMENT_POLICY	Fare pass and payment policy
1010	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION.SERVICE_DISRUPTION_DELAY_ALERTS	Service disruption and delay alerts
1011	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION.TRANSIT_TIMETABLE_STOP_DATA	Transit timetable and stop data
1012	SUB.TRANSPORT_MOBILITY.PUBLIC_TRANSIT_SERVICE_INFORMATION.TRANSIT_TIMETABLE_STOP_DATA.GTFS_LIKE_TRANSIT_TABLES	GTFS-like transit tables
1013	SUB.TRANSPORT_MOBILITY.RAIL_OPERATIONS_INFRASTRUCTURE	Rail operations and infrastructure
1014	SUB.TRANSPORT_MOBILITY.RAIL_OPERATIONS_INFRASTRUCTURE.RAIL_TIMETABLE_STATION_NOTICES	Rail timetable and station notices
1015	SUB.TRANSPORT_MOBILITY.RAIL_OPERATIONS_INFRASTRUCTURE.TRACK_MAINTENANCE_SIGNAL_WORKS	Track maintenance and signal works
1016	SUB.TRANSPORT_MOBILITY.ROAD_TRAFFIC_AUTOMOTIVE_SERVICE	Road traffic and automotive service
1017	SUB.TRANSPORT_MOBILITY.ROAD_TRAFFIC_AUTOMOTIVE_SERVICE.DRIVER_LICENSE_REGISTRATION_GUIDANCE	Driver license and vehicle registration guidance
1018	SUB.TRANSPORT_MOBILITY.ROAD_TRAFFIC_AUTOMOTIVE_SERVICE.PARKING_TOLL_TRAFFIC_RULES	Parking toll and traffic rules
1019	SUB.TRANSPORT_MOBILITY.ROAD_TRAFFIC_AUTOMOTIVE_SERVICE.ROADWORK_LANE_CLOSURE_NOTICES	Roadwork and lane closure notices
1020	SUB.TRANSPORT_MOBILITY.TRAFFIC_SAFETY_INCIDENT_REPORTS	Traffic safety and incident reports
1021	SUB.TRANSPORT_MOBILITY.TRAFFIC_SAFETY_INCIDENT_REPORTS.CRASH_INVESTIGATION_REPORTS	Crash investigation reports
1022	SUB.TRANSPORT_MOBILITY.TRAFFIC_SAFETY_INCIDENT_REPORTS.ROAD_HAZARD_SAFETY_ADVISORIES	Road hazard safety advisories
1023	SUB.TRANSPORT_MOBILITY.TRAVEL_TICKET_RESERVATION_ITINERARIES	Travel tickets reservations and itineraries
1024	SUB.TRANSPORT_MOBILITY.TRAVEL_TICKET_RESERVATION_ITINERARIES.REFUND_CLAIM_TRAVEL_DISPUTES	Refund claim travel disputes
1025	SUB.TRANSPORT_MOBILITY.URBAN_MOBILITY_ROUTE_PLANNING	Urban mobility and route planning
1026	SUB.TRANSPORT_MOBILITY.URBAN_MOBILITY_ROUTE_PLANNING.RIDE_SHARE_MICROMOBILITY_SERVICE_DATA	Ride-share and micromobility service data
1027	SUB.TRANSPORT_MOBILITY.VEHICLE_MAINTENANCE_OWNER_MANUALS	Vehicle maintenance and owner manuals
1028	SUB.TRANSPORT_MOBILITY.VEHICLE_MAINTENANCE_OWNER_MANUALS.ELECTRIC_VEHICLE_CHARGING_GUIDANCE	Electric vehicle charging guidance