sinhala-script-lid / README.md
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Leakage-free Sinhala/Pali/Sanskrit release
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metadata
language:
  - si
  - pi
  - sa
license: other
task_categories:
  - text-classification
pretty_name: Sinhala-script LangID (Sinhala, Pali, Sanskrit)
configs:
  - config_name: default
    data_files:
      - split: train
        path: train.jsonl
      - split: validation
        path: validation.jsonl
      - split: test
        path: test.jsonl

Sinhala-script language identification: Sinhala, Pali, Sanskrit

Sentence-level instances of three languages written in Sinhala script, with a leakage-free document-blocked split. Labels: sin_Sinh, pli_Sinh, san_Sinh.

Rows

split sin_Sinh pli_Sinh san_Sinh total
train 83105 58309 10565 151979
validation 10345 7317 1337 18999
test 10567 7105 1310 18982

Construction

Built by scripts/maintainer/resplit_target.py (config: target_split in config/pipeline.yaml):

  1. Sources pooled and NFC-normalised; text not in Sinhala script removed.
  2. Documents: source document ids; for the Pali-Sinhala parallel corpus (sinhala-nlp/pali-sinhala, row-aligned) a sutta starts at each Pali incipit evam me sutam, and both sides of a translation pair share the document.
  3. Split unit: contiguous block of <= 25 rows within a document.
  4. Sentence-level units: split at sentence terminators, packed to <= 200 characters.
  5. Exact duplicates removed; texts with conflicting labels removed.
  6. Near duplicates removed with MinHash LSH (character 5-grams, Jaccard >= 0.8).
  7. Group-stratified {'train': 0.8, 'validation': 0.1, 'test': 0.1} split (seed 42).

Leakage check: {'exact_cross_split': 0, 'near_dup_cross_split_j0.8': 0, 'near_dup_cross_split_j0.5': 15005}

Length (characters): {'pli_Sinh': {'p50': 138.0, 'p90': 195.0, 'max': 200}, 'san_Sinh': {'p50': 108.0, 'p90': 173.0, 'max': 200}, 'sin_Sinh': {'p50': 155.0, 'p90': 197.0, 'max': 200}}

Sources

  • DCS: {'san_Sinh': 4888}
  • SansinNT: {'san_Sinh': 8223}
  • SiDiaC-v2: {'san_Sinh': 101, 'pli_Sinh': 2862}
  • SiPaKosa: {'sin_Sinh': 5997}
  • pali-sinhala-parallel: {'pli_Sinh': 69869, 'sin_Sinh': 98020}

Fields

sample_id, text, label, source, subcorpus, doc_id, block_id, text_sha256.