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@@ -58,3 +58,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
 annotations/BHT25_All_annotated.csv filter=lfs diff=lfs merge=lfs -text
+metadata/Raw_data_collection.xlsx filter=lfs diff=lfs merge=lfs -text

metadata/Raw_data_collection.xlsx

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+version https://git-lfs.github.com/spec/v1
+oid sha256:2647c235cbfcbe8bca025b4c6cd394522b57fcd3598786e49a9abda882dda400
+size 110945

metadata/statistics.json

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+{
+  "dataset_info": {
+    "name": "BHT25",
+    "version": "1.0",
+    "release_date": "2024-12-19",
+    "total_triplets": 27149,
+    "languages": ["bn", "hi", "te"],
+    "license": "CC BY 4.0",
+    "doi": "[To be assigned upon publication]"
+  },
+  
+  "corpus_statistics": {
+    "bengali": {
+      "language_code": "bn",
+      "language_family": "Indo-Aryan",
+      "script": "Bengali (Bangla)",
+      "total_sentences": 27149,
+      "total_tokens": 420212,
+      "total_characters": 2369637,
+      "vocabulary_size": 47856,
+      "type_token_ratio": 0.1138,
+      "sentence_length_tokens": {
+        "mean": 15.48,
+        "median": 14.0,
+        "std_dev": 8.31,
+        "min": 3,
+        "max": 147,
+        "25th_percentile": 10.0,
+        "75th_percentile": 19.0,
+        "95th_percentile": 29.0
+      },
+      "sentence_length_characters": {
+        "mean": 87.31,
+        "median": 78.0,
+        "std_dev": 48.24,
+        "min": 15,
+        "max": 452,
+        "25th_percentile": 56.0,
+        "75th_percentile": 108.0,
+        "95th_percentile": 174.0
+      }
+    },
+    
+    "hindi": {
+      "language_code": "hi",
+      "language_family": "Indo-Aryan",
+      "script": "Devanagari",
+      "total_sentences": 27149,
+      "total_tokens": 387548,
+      "total_characters": 2228937,
+      "vocabulary_size": 43214,
+      "type_token_ratio": 0.1115,
+      "sentence_length_tokens": {
+        "mean": 14.27,
+        "median": 13.0,
+        "std_dev": 7.58,
+        "min": 3,
+        "max": 132,
+        "25th_percentile": 9.0,
+        "75th_percentile": 18.0,
+        "95th_percentile": 27.0
+      },
+      "sentence_length_characters": {
+        "mean": 82.09,
+        "median": 74.0,
+        "std_dev": 45.67,
+        "min": 14,
+        "max": 605,
+        "25th_percentile": 52.0,
+        "75th_percentile": 102.0,
+        "95th_percentile": 165.0
+      }
+    },
+    
+    "telugu": {
+      "language_code": "te",
+      "language_family": "Dravidian",
+      "script": "Telugu",
+      "total_sentences": 27149,
+      "total_tokens": 444965,
+      "total_characters": 2598418,
+      "vocabulary_size": 52143,
+      "type_token_ratio": 0.1172,
+      "sentence_length_tokens": {
+        "mean": 16.39,
+        "median": 15.0,
+        "std_dev": 9.12,
+        "min": 3,
+        "max": 156,
+        "25th_percentile": 10.0,
+        "75th_percentile": 21.0,
+        "95th_percentile": 32.0
+      },
+      "sentence_length_characters": {
+        "mean": 95.71,
+        "median": 87.0,
+        "std_dev": 52.63,
+        "min": 17,
+        "max": 633,
+        "25th_percentile": 62.0,
+        "75th_percentile": 119.0,
+        "95th_percentile": 189.0
+      }
+    }
+  },
+  
+  "language_pair_statistics": {
+    "bengali_hindi": {
+      "token_length_ratio": 1.084,
+      "character_length_ratio": 1.063,
+      "semantic_consistency_score": 0.81,
+      "notes": "Both Indo-Aryan languages with similar morphology"
+    },
+    "bengali_telugu": {
+      "token_length_ratio": 0.944,
+      "character_length_ratio": 0.912,
+      "semantic_consistency_score": 0.873,
+      "notes": "Cross-family pair; Telugu agglutinative morphology"
+    },
+    "hindi_telugu": {
+      "token_length_ratio": 0.871,
+      "character_length_ratio": 0.858,
+      "semantic_consistency_score": 0.71,
+      "notes": "Greatest typological distance; cross-family translation"
+    }
+  },
+  
+  "quality_metrics": {
+    "alignment": {
+      "method": "Hybrid Gale-Church + CLWE",
+      "alignment_accuracy": 0.758,
+      "validation_sample_size": 500,
+      "perfect_alignment_percentage": 75.8,
+      "partial_alignment_percentage": 18.4,
+      "poor_alignment_percentage": 5.8
+    },
+    "fluency": {
+      "rating_scale": "1-5 (1=incomprehensible, 5=perfectly fluent)",
+      "annotators_per_language": 3,
+      "composite_fluency_score": {
+        "mean": 4.08,
+        "std_dev": 0.67,
+        "median": 4.17,
+        "5th_percentile": 2.67,
+        "95th_percentile": 4.83
+      },
+      "fluency_by_language": {
+        "bengali": {"mean": 4.15, "std_dev": 0.63},
+        "hindi": {"mean": 4.02, "std_dev": 0.69},
+        "telugu": {"mean": 4.07, "std_dev": 0.68}
+      }
+    },
+    "inter_annotator_agreement": {
+      "metric": "Fleiss_kappa",
+      "semantic_equivalence": 0.89,
+      "fluency_ratings_icc": 0.84,
+      "interpretation": "Almost perfect agreement"
+    },
+    "semantic_consistency": {
+      "method": "Cross-Lingual Word Embeddings (FastText)",
+      "bn_hi_similarity": 0.81,
+      "bn_te_similarity": 0.873,
+      "hi_te_similarity": 0.71,
+      "notes": "Lower hi-te reflects greater family divergence"
+    }
+  },
+  
+  "genre_distribution": {
+    "narrative_fiction": {
+      "count": 12271,
+      "percentage": 45.2,
+      "description": "Short stories and novel excerpts"
+    },
+    "poetry_verse": {
+      "count": 5077,
+      "percentage": 18.7,
+      "description": "Traditional and modern poetry"
+    },
+    "folk_literature": {
+      "count": 4235,
+      "percentage": 15.6,
+      "description": "Folk tales and oral traditions"
+    },
+    "contemporary_prose": {
+      "count": 3339,
+      "percentage": 12.3,
+      "description": "Modern literary essays and articles"
+    },
+    "classical_literature": {
+      "count": 2227,
+      "percentage": 8.2,
+      "description": "Traditional Sadhu Bhasha texts"
+    }
+  },
+  
+  "vocabulary_coverage": {
+    "bengali": {
+      "top_100_words_coverage": 0.423,
+      "top_1000_words_coverage": 0.687,
+      "top_5000_words_coverage": 0.891,
+      "hapax_legomena_percentage": 42.3
+    },
+    "hindi": {
+      "top_100_words_coverage": 0.441,
+      "top_1000_words_coverage": 0.703,
+      "top_5000_words_coverage": 0.897,
+      "hapax_legomena_percentage": 39.8
+    },
+    "telugu": {
+      "top_100_words_coverage": 0.389,
+      "top_1000_words_coverage": 0.652,
+      "top_5000_words_coverage": 0.876,
+      "hapax_legomena_percentage": 45.7
+    }
+  },
+  
+  "data_collection": {
+    "source_period": "1910-2023",
+    "primary_authors": [
+      "Rabindranath Tagore (Bengali)",
+      "Sarat Chandra Chattopadhyay (Bengali)",
+      "Premchand (Hindi)",
+      "Mahadevi Verma (Hindi)",
+      "Gurajada Apparao (Telugu)",
+      "Viswanatha Satyanarayana (Telugu)"
+    ],
+    "collection_period": "2022-2024",
+    "digitization_method": "OCR + Manual correction",
+    "ocr_accuracy": {
+      "bengali": 0.972,
+      "hindi": 0.968,
+      "telugu": 0.956
+    }
+  },
+  
+  "preprocessing": {
+    "unicode_normalization": "NFKC",
+    "character_filtering": true,
+    "sentence_segmentation": "Rule-based + Statistical",
+    "minimum_sentence_length": 3,
+    "maximum_sentence_length": 150,
+    "duplicate_removal": true,
+    "language_detection_threshold": 0.95
+  },
+  
+  "ethical_compliance": {
+    "copyright_cleared": true,
+    "public_domain_percentage": 78.3,
+    "licensed_content_percentage": 21.7,
+    "personal_information_removed": true,
+    "offensive_content_filtered": true,
+    "excluded_sentences_ethical": 78,
+    "annotator_compensation": "₹500/hour",
+    "work_hours_limit": "4 hours/day"
+  },
+  
+  "known_limitations": {
+    "alignment_issues": {
+      "percentage": 5.8,
+      "description": "Suboptimal alignment in complex literary passages"
+    },
+    "genre_imbalance": {
+      "dominant_genre": "narrative_fiction",
+      "percentage": 45.2,
+      "mitigation": "Users can filter by genre metadata"
+    },
+    "archaic_language": {
+      "sadhu_bhasha_percentage": 8.2,
+      "description": "Traditional Bengali may challenge modern systems"
+    },
+    "residual_ocr_errors": {
+      "estimated_rate": 0.005,
+      "description": "Rare characters and conjuncts most affected"
+    }
+  },
+  
+  "file_metadata": {
+    "format": "Apache Parquet",
+    "compression": "snappy",
+    "compressed_size_mb": 4.73,
+    "uncompressed_size_mb": 12.3,
+    "compression_ratio": 0.384,
+    "encoding": "UTF-8",
+    "schema_version": "1.0"
+  },
+  
+  "citation": {
+    "bibtex": "@article{sani2024bht25,\n  title={BHT25: A Bengali-Hindi-Telugu Parallel Corpus for Enhanced Literary Machine Translation},\n  author={Sani, Sudeshna and Gangashetty, Suryakanth V and Samudravijaya, K and Nandi, Anik and Priya, Aruna and Kumar, Vineeth and Dubey, Akhilesh Kumar},\n  journal={Data in Brief},\n  year={2024},\n  publisher={Elsevier}\n}",
+    "apa": "Sani, S., Gangashetty, S. V., Samudravijaya, K., Nandi, A., Priya, A., Kumar, V., & Dubey, A. K. (2024). BHT25: A Bengali-Hindi-Telugu Parallel Corpus for Enhanced Literary Machine Translation. Data in Brief, XX, XXXXX."
+  },
+  
+  "contact": {
+    "corresponding_author": "Sudeshna Sani",
+    "email": "sudeshna.sani@klef.edu.in",
+    "affiliation": "Koneru Lakshmaiah Education Foundation, Guntur, India",
+    "github": "https://github.com/sudeshna84/BHT25",
+    "huggingface": "https://huggingface.co/datasets/sudeshna84/BHT25"
+  },
+  
+  "version_history": {
+    "v1.0": {
+      "release_date": "2024-12-19",
+      "changes": "Initial public release with 27,149 triplets"
+    }
+  },
+  
+  "planned_updates": {
+    "v1.1": {
+      "planned_date": "2025-Q1",
+      "features": ["Sentence-level emotion annotations"]
+    },
+    "v2.0": {
+      "planned_date": "2025-Q3",
+      "features": ["Expansion to 50,000 triplets"]
+    },
+    "v2.1": {
+      "planned_date": "2025-Q4",
+      "features": ["Parallel audio for multilingual speech research"]
+    },
+    "v3.0": {
+      "planned_date": "2026",
+      "features": ["Extension to Tamil and Kannada"]
+    }
+  }
+}