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{
  "id": "bashkir_diacritics_restorer",
  "version": "v1.2",
  "type": "sequence_tagging_restorer",
  "language": "ba",
  "status": "release_candidate",
  "license": "cc-by-4.0",
  "files": ["model.onnx", "vocab.json", "substitution_map.json", "config.json", "runtime.py"],
  "architecture": "ConvBiGRU (Conv1D 3,5 + 2-layer BiGRU 192)",
  "parameters": 1184032,
  "metrics": {
    "original_heldout": {"sentence_exact_match": 0.9342, "spec_letter_f1": 0.9967},
    "historical_safety_stress_n_1000": {
      "note": "Earlier experimental-runtime measurements; the exact evaluation protocol was not recorded and the public-only 87.8% figure is not reproducible on the current test file.",
      "with_optional_kenlm": {"restoration_exact_match": 0.923, "clean_input_untouched_pct": 98.5},
      "default_no_kenlm": {"restoration_exact_match": 0.891, "clean_input_untouched_pct": 97.8},
      "neural_only_no_lexicon_no_kenlm": {"restoration_exact_match": 0.878, "clean_input_untouched_pct": 97.6}
    },
    "recheck_2026_09_30": {
      "test_file": "experiments/diacritics_restorer/data/test.parquet",
      "test_file_sha256": "72230475aa015c04a6ae0cf8bd17aa9420ededa75ba9d6447b7d94a4ffb54088",
      "selection": "first 1000 rows in file order",
      "threshold": 0.40,
      "public_runtime_without_lexicon": {"restoration_exact_match": 0.836, "clean_input_untouched_pct": 97.6},
      "public_runtime_with_local_optional_lexicon": {"restoration_exact_match": 0.888, "clean_input_untouched_pct": 97.6},
      "experimental_runtime_without_lexicon": {"restoration_exact_match": 0.838, "clean_input_untouched_pct": 97.6},
      "experimental_runtime_with_local_lexicon": {"restoration_exact_match": 0.891, "clean_input_untouched_pct": 97.8}
    }
  },
  "runtime": {"safe_mode": true, "kenlm": "optional; excluded from release"},
  "source_policy": "Model artifacts and derived substitution rules only; training text and derived lexical data are not redistributed."
}