Leakage-free Sinhala/Pali/Sanskrit release

.gitattributes

@@ -58,3 +58,6 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+test.jsonl filter=lfs diff=lfs merge=lfs -text
+train.jsonl filter=lfs diff=lfs merge=lfs -text
+validation.jsonl filter=lfs diff=lfs merge=lfs -text

README.md

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+---
+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`.

split_report.json

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+{
+  "inputs_sha256": {
+    "train.csv": "714e6df2d5cbcf54a74d9fb6851cc8c76cd70441bb6dc0ec6ba36a71a1f31a02",
+    "val.csv": "226bc6ccac463a462b8f4166d2110ab15a579c0130a337b392d969fddaa350ee",
+    "test.csv": "e8ff5efb050c395448d32af335507c5616d8bca0ef0c410d7f1f136ab0d9fd54"
+  },
+  "config": {
+    "seed": 42,
+    "fractions": {
+      "train": 0.8,
+      "validation": 0.1,
+      "test": 0.1
+    },
+    "max_chars": 200,
+    "min_letters": 5,
+    "block_size": 25,
+    "near_dup": {
+      "shingle": 5,
+      "num_perm": 128,
+      "threshold": 0.8
+    }
+  },
+  "stats": {
+    "input_rows": 74318,
+    "units_too_short_or_wrong_script": 219,
+    "rows_not_sinhala_script": 478,
+    "units_after_segmentation": 222146,
+    "exact_duplicate_removed": 13274,
+    "near_duplicate_removed": 18693,
+    "near_duplicate_pairs": 86443
+  },
+  "provenance": {
+    "public_corpus": "sinhala-nlp/pali-sinhala@da194116e510923936a3871a95ce284b5f75cde5",
+    "rows_checked": 52956,
+    "rows_matching_public_alignment": 52956
+  },
+  "parallel_documents": 441,
+  "splits": {
+    "train": {
+      "san_Sinh": {
+        "DCS": 3919,
+        "SansinNT": 6570,
+        "SiDiaC-v2": 76
+      },
+      "pli_Sinh": {
+        "SiDiaC-v2": 2297,
+        "pali-sinhala-parallel": 56012
+      },
+      "sin_Sinh": {
+        "SiPaKosa": 4804,
+        "pali-sinhala-parallel": 78301
+      }
+    },
+    "validation": {
+      "san_Sinh": {
+        "DCS": 483,
+        "SansinNT": 829,
+        "SiDiaC-v2": 25
+      },
+      "pli_Sinh": {
+        "SiDiaC-v2": 285,
+        "pali-sinhala-parallel": 7032
+      },
+      "sin_Sinh": {
+        "SiPaKosa": 604,
+        "pali-sinhala-parallel": 9741
+      }
+    },
+    "test": {
+      "san_Sinh": {
+        "DCS": 486,
+        "SansinNT": 824
+      },
+      "pli_Sinh": {
+        "SiDiaC-v2": 280,
+        "pali-sinhala-parallel": 6825
+      },
+      "sin_Sinh": {
+        "SiPaKosa": 589,
+        "pali-sinhala-parallel": 9978
+      }
+    }
+  },
+  "split_totals": {
+    "train": 151979,
+    "validation": 18999,
+    "test": 18982
+  },
+  "blocks_per_split": {
+    "train": 1985,
+    "validation": 236,
+    "test": 247
+  },
+  "length_chars": {
+    "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
+    }
+  },
+  "leakage": {
+    "exact_cross_split": 0,
+    "near_dup_cross_split_j0.8": 0,
+    "near_dup_cross_split_j0.5": 15005
+  }
+}

test.jsonl

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+size 13160201

train.jsonl

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+size 105339396

validation.jsonl

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