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- .gitattributes +1 -0
- README.md +334 -161
- models/embeddings/aligned/bn_128d.bin +3 -0
- models/embeddings/aligned/bn_128d.meta.json +1 -0
- models/embeddings/aligned/bn_128d.projection.npy +3 -0
- models/embeddings/aligned/bn_128d_metadata.json +8 -0
- models/embeddings/aligned/bn_32d.bin +3 -0
- models/embeddings/aligned/bn_32d.meta.json +1 -0
- models/embeddings/aligned/bn_32d.projection.npy +3 -0
- models/embeddings/aligned/bn_32d_metadata.json +8 -0
- models/embeddings/aligned/bn_64d.bin +3 -0
- models/embeddings/aligned/bn_64d.meta.json +1 -0
- models/embeddings/aligned/bn_64d.projection.npy +3 -0
- models/embeddings/aligned/bn_64d_metadata.json +8 -0
- models/embeddings/monolingual/bn_128d.bin +2 -2
- models/embeddings/monolingual/bn_128d_metadata.json +5 -3
- models/embeddings/monolingual/bn_32d.bin +2 -2
- models/embeddings/monolingual/bn_32d_metadata.json +5 -3
- models/embeddings/monolingual/bn_64d.bin +2 -2
- models/embeddings/monolingual/bn_64d_metadata.json +5 -3
- models/subword_markov/bn_markov_ctx1_subword.parquet +2 -2
- models/subword_markov/bn_markov_ctx1_subword_metadata.json +2 -2
- models/subword_markov/bn_markov_ctx2_subword.parquet +2 -2
- models/subword_markov/bn_markov_ctx2_subword_metadata.json +2 -2
- models/subword_markov/bn_markov_ctx3_subword.parquet +2 -2
- models/subword_markov/bn_markov_ctx3_subword_metadata.json +2 -2
- models/subword_markov/bn_markov_ctx4_subword.parquet +2 -2
- models/subword_markov/bn_markov_ctx4_subword_metadata.json +2 -2
- models/subword_ngram/bn_2gram_subword.parquet +2 -2
- models/subword_ngram/bn_2gram_subword_metadata.json +2 -2
- models/subword_ngram/bn_3gram_subword.parquet +2 -2
- models/subword_ngram/bn_3gram_subword_metadata.json +2 -2
- models/subword_ngram/bn_4gram_subword.parquet +2 -2
- models/subword_ngram/bn_4gram_subword_metadata.json +2 -2
- models/subword_ngram/bn_5gram_subword.parquet +3 -0
- models/subword_ngram/bn_5gram_subword_metadata.json +7 -0
- models/tokenizer/bn_tokenizer_16k.model +2 -2
- models/tokenizer/bn_tokenizer_16k.vocab +0 -0
- models/tokenizer/bn_tokenizer_32k.model +2 -2
- models/tokenizer/bn_tokenizer_32k.vocab +0 -0
- models/tokenizer/bn_tokenizer_64k.model +2 -2
- models/tokenizer/bn_tokenizer_64k.vocab +0 -0
- models/tokenizer/bn_tokenizer_8k.model +2 -2
- models/tokenizer/bn_tokenizer_8k.vocab +0 -0
- models/vocabulary/bn_vocabulary.parquet +2 -2
- models/vocabulary/bn_vocabulary_metadata.json +10 -9
- models/word_markov/bn_markov_ctx1_word.parquet +2 -2
- models/word_markov/bn_markov_ctx1_word_metadata.json +2 -2
- models/word_markov/bn_markov_ctx2_word.parquet +2 -2
- models/word_markov/bn_markov_ctx2_word_metadata.json +2 -2
.gitattributes
CHANGED
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@@ -39,3 +39,4 @@ visualizations/position_encoding_comparison.png filter=lfs diff=lfs merge=lfs -t
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visualizations/tsne_sentences.png filter=lfs diff=lfs merge=lfs -text
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visualizations/tsne_words.png filter=lfs diff=lfs merge=lfs -text
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visualizations/zipf_law.png filter=lfs diff=lfs merge=lfs -text
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visualizations/tsne_sentences.png filter=lfs diff=lfs merge=lfs -text
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visualizations/tsne_words.png filter=lfs diff=lfs merge=lfs -text
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visualizations/zipf_law.png filter=lfs diff=lfs merge=lfs -text
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visualizations/embedding_tsne_multilingual.png filter=lfs diff=lfs merge=lfs -text
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README.md
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---
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language: bn
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language_name:
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language_family: indoaryan_eastern
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tags:
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- wikilangs
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- n-gram
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- markov
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- wikipedia
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- monolingual
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- family-indoaryan_eastern
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license: mit
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library_name: wikilangs
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pipeline_tag:
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datasets:
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- omarkamali/wikipedia-monthly
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dataset_info:
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metrics:
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- name: best_compression_ratio
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type: compression
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value:
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- name: best_isotropy
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type: isotropy
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value: 0.
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- name: vocabulary_size
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type: vocab
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value:
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generated:
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---
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#
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## Comprehensive Research Report & Full Ablation Study
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This repository contains NLP models trained and evaluated by Wikilangs, specifically on **
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We analyze tokenizers, n-gram models, Markov chains, vocabulary statistics, and word embeddings.
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## 📋 Repository Contents
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### Models & Assets
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- Tokenizers (8k, 16k, 32k, 64k)
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- N-gram models (2, 3, 4-gram)
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- Markov chains (context of 1, 2, 3 and
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- Subword N-gram and Markov chains
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- Embeddings in various sizes and dimensions
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- Language Vocabulary
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- Language Statistics
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### Analysis and Evaluation
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- [3. Markov Chain Evaluation](#3-markov-chain-evaluation)
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- [4. Vocabulary Analysis](#4-vocabulary-analysis)
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- [5. Word Embeddings Evaluation](#5-word-embeddings-evaluation)
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- [6.
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- [Metrics Glossary](#appendix-metrics-glossary--interpretation-guide)
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- [Visualizations Index](#visualizations-index)
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### Results
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| Vocab Size | Compression | Avg Token Len | UNK Rate | Total Tokens |
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|------------|-------------|---------------|----------|--------------|
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| **8k** | 3.
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| **16k** | 4.
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| **32k** | 4.
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| **64k** |
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### Tokenization Examples
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Below are sample sentences tokenized with each vocabulary size:
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**Sample 1:**
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ঘটনাবলী
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জন্ম
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মৃত্যু
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মিশেল আফলাক
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ছুটি এবং অন্যান্য
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বহিঃসংযো...`
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| Vocab | Tokens | Count |
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|-------|--------|-------|
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**Sample 2:**
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চিলমারী ইউনিয়ন, চি...`
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| Vocab | Tokens | Count |
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|-------|--------|-------|
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**Sample 3:** `ইতিহাস
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জন্ম
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মৃত্যু
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ছুটি এবং অন্যান্য
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বহিঃসংযোগ
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বিষয়শ্র...`
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| Vocab | Tokens | Count |
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|-------|--------|-------|
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### Key Findings
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- **Best Compression:** 64k achieves
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- **Lowest UNK Rate:** 8k with 0.
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- **Trade-off:** Larger vocabularies improve compression but increase model size
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- **Recommendation:** 32k vocabulary provides optimal balance for production use
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### Results
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| N-gram | Perplexity | Entropy | Unique N-grams | Top-100 Coverage | Top-1000 Coverage |
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### Top 5 N-grams by Size
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**2-grams:**
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| Rank | N-gram | Count |
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| Rank | N-gram | Count |
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### Key Findings
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- **Entropy Trend:** Decreases with larger n-grams (more predictable)
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- **Coverage:** Top-1000 patterns cover ~
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- **Recommendation:** 4-gram or 5-gram for best predictive performance
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---
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### Results
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| Context | Avg Entropy | Perplexity | Branching Factor | Unique Contexts | Predictability |
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### Generated Text Samples
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Below are text samples generated from each Markov chain model:
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**Context Size 1:**
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**Context Size 2:**
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**Context Size 4:**
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### Key Findings
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- **Branching Factor:** Decreases with context size (more deterministic)
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- **Memory Trade-off:** Larger contexts require more storage (
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- **Recommendation:** Context-3 or Context-4 for text generation
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---
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| Metric | Value |
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| Median Frequency | 4 |
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### Most Common Words
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| Rank | Word | Frequency |
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### Least Common Words (from vocabulary)
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| Rank | Word | Frequency |
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### Zipf's Law Analysis
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| Metric | Value |
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| Adherence Quality | **excellent** |
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### Coverage Analysis
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| Top N Words | Coverage |
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### Key Findings
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---
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## 5. Word Embeddings Evaluation
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### Model Comparison
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### Key Findings
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- **Best Isotropy:** mono_32d with 0.
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- **Recommendation:**
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---
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## 6.
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@@ -362,11 +532,12 @@ Below are text samples generated from each Markov chain model:
|
|
| 362 |
|
| 363 |
| Component | Recommended | Rationale |
|
| 364 |
|-----------|-------------|-----------|
|
| 365 |
-
| Tokenizer | **
|
| 366 |
-
| N-gram | **
|
| 367 |
-
| Markov | **Context-4** | Highest predictability (
|
| 368 |
| Embeddings | **100d** | Balanced semantic capture and isotropy |
|
| 369 |
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| 370 |
---
|
| 371 |
## Appendix: Metrics Glossary & Interpretation Guide
|
| 372 |
|
|
@@ -556,7 +727,8 @@ If you use these models in your research, please cite:
|
|
| 556 |
author = {Kamali, Omar},
|
| 557 |
title = {Wikilangs: Open NLP Models for Wikipedia Languages},
|
| 558 |
year = {2025},
|
| 559 |
-
|
|
|
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| 560 |
url = {https://huggingface.co/wikilangs}
|
| 561 |
institution = {Omneity Labs}
|
| 562 |
}
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@@ -572,7 +744,8 @@ MIT License - Free for academic and commercial use.
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| 572 |
- 🤗 Models: [huggingface.co/wikilangs](https://huggingface.co/wikilangs)
|
| 573 |
- 📊 Data: [wikipedia-monthly](https://huggingface.co/datasets/omarkamali/wikipedia-monthly)
|
| 574 |
- 👤 Author: [Omar Kamali](https://huggingface.co/omarkamali)
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| 575 |
---
|
| 576 |
*Generated by Wikilangs Models Pipeline*
|
| 577 |
|
| 578 |
-
*Report Date:
|
|
|
|
| 1 |
---
|
| 2 |
language: bn
|
| 3 |
+
language_name: Bangla
|
| 4 |
language_family: indoaryan_eastern
|
| 5 |
tags:
|
| 6 |
- wikilangs
|
|
|
|
| 10 |
- n-gram
|
| 11 |
- markov
|
| 12 |
- wikipedia
|
| 13 |
+
- feature-extraction
|
| 14 |
+
- sentence-similarity
|
| 15 |
+
- tokenization
|
| 16 |
+
- n-grams
|
| 17 |
+
- markov-chain
|
| 18 |
+
- text-mining
|
| 19 |
+
- fasttext
|
| 20 |
+
- babelvec
|
| 21 |
+
- vocabulous
|
| 22 |
+
- vocabulary
|
| 23 |
- monolingual
|
| 24 |
- family-indoaryan_eastern
|
| 25 |
license: mit
|
| 26 |
library_name: wikilangs
|
| 27 |
+
pipeline_tag: text-generation
|
| 28 |
datasets:
|
| 29 |
- omarkamali/wikipedia-monthly
|
| 30 |
dataset_info:
|
|
|
|
| 33 |
metrics:
|
| 34 |
- name: best_compression_ratio
|
| 35 |
type: compression
|
| 36 |
+
value: 5.044
|
| 37 |
- name: best_isotropy
|
| 38 |
type: isotropy
|
| 39 |
+
value: 0.8095
|
| 40 |
- name: vocabulary_size
|
| 41 |
type: vocab
|
| 42 |
+
value: 0
|
| 43 |
+
generated: 2026-01-07
|
| 44 |
---
|
| 45 |
|
| 46 |
+
# Bangla - Wikilangs Models
|
| 47 |
## Comprehensive Research Report & Full Ablation Study
|
| 48 |
|
| 49 |
+
This repository contains NLP models trained and evaluated by Wikilangs, specifically on **Bangla** Wikipedia data.
|
| 50 |
We analyze tokenizers, n-gram models, Markov chains, vocabulary statistics, and word embeddings.
|
| 51 |
|
| 52 |
## 📋 Repository Contents
|
|
|
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| 54 |
### Models & Assets
|
| 55 |
|
| 56 |
- Tokenizers (8k, 16k, 32k, 64k)
|
| 57 |
+
- N-gram models (2, 3, 4, 5-gram)
|
| 58 |
+
- Markov chains (context of 1, 2, 3, 4 and 5)
|
| 59 |
- Subword N-gram and Markov chains
|
| 60 |
+
- Embeddings in various sizes and dimensions (aligned and unaligned)
|
| 61 |
- Language Vocabulary
|
| 62 |
- Language Statistics
|
| 63 |
+
|
| 64 |

|
| 65 |
|
| 66 |
### Analysis and Evaluation
|
|
|
|
| 70 |
- [3. Markov Chain Evaluation](#3-markov-chain-evaluation)
|
| 71 |
- [4. Vocabulary Analysis](#4-vocabulary-analysis)
|
| 72 |
- [5. Word Embeddings Evaluation](#5-word-embeddings-evaluation)
|
| 73 |
+
- [6. Morphological Analysis (Experimental)](#6--morphological-analysis-experimental)
|
| 74 |
+
- [7. Summary & Recommendations](#7-summary--recommendations)
|
| 75 |
- [Metrics Glossary](#appendix-metrics-glossary--interpretation-guide)
|
| 76 |
- [Visualizations Index](#visualizations-index)
|
| 77 |
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|
| 80 |
|
| 81 |

|
| 82 |
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| 83 |
+

|
| 84 |
+
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| 85 |
+

|
| 86 |
+
|
| 87 |
+

|
| 88 |
+
|
| 89 |
### Results
|
| 90 |
|
| 91 |
| Vocab Size | Compression | Avg Token Len | UNK Rate | Total Tokens |
|
| 92 |
|------------|-------------|---------------|----------|--------------|
|
| 93 |
+
| **8k** | 3.770x | 3.77 | 0.0982% | 2,627,489 |
|
| 94 |
+
| **16k** | 4.281x | 4.28 | 0.1115% | 2,313,780 |
|
| 95 |
+
| **32k** | 4.713x | 4.71 | 0.1227% | 2,101,756 |
|
| 96 |
+
| **64k** | 5.044x 🏆 | 5.04 | 0.1313% | 1,964,118 |
|
| 97 |
|
| 98 |
### Tokenization Examples
|
| 99 |
|
| 100 |
Below are sample sentences tokenized with each vocabulary size:
|
| 101 |
|
| 102 |
+
**Sample 1:** `ছেউড়িয়া কুষ্টিয়া শহরের পূর্ব দিকে অবস্থিত একটি এলাকা। লালন শাহের মাজার এই ছেউ...`
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|
| 103 |
|
| 104 |
| Vocab | Tokens | Count |
|
| 105 |
|-------|--------|-------|
|
| 106 |
+
| 8k | `▁ছে উ ড়িয়া ▁কুষ্টিয়া ▁শহরের ▁পূর্ব ▁দিকে ▁অবস্থিত ▁একটি ▁এলাকা ... (+17 more)` | 27 |
|
| 107 |
+
| 16k | `▁ছে উ ড়িয়া ▁কুষ্টিয়া ▁শহরের ▁পূর্ব ▁দিকে ▁অবস্থিত ▁একটি ▁এলাকা ... (+15 more)` | 25 |
|
| 108 |
+
| 32k | `▁ছে উ ড়িয়া ▁কুষ্টিয়া ▁শহরের ▁পূর্ব ▁দিকে ▁অবস্থিত ▁একটি ▁এলাকা ... (+15 more)` | 25 |
|
| 109 |
+
| 64k | `▁ছে উ ড়িয়া ▁কুষ্টিয়া ▁শহরের ▁পূর্ব ▁দিকে ▁অবস্থিত ▁একটি ▁এলাকা ... (+15 more)` | 25 |
|
| 110 |
|
| 111 |
+
**Sample 2:** `বনী কেনানাহ () হল জর্ডানের ইরবিড গভর্নরেটের একটি জেলা। তথ্যসূত্র জেলা`
|
|
|
|
| 112 |
|
| 113 |
| Vocab | Tokens | Count |
|
| 114 |
|-------|--------|-------|
|
| 115 |
+
| 8k | `▁ব নী ▁কেন ান াহ ▁() ▁হল ▁জর্ ড ানের ... (+11 more)` | 21 |
|
| 116 |
+
| 16k | `▁ব নী ▁কেন ান াহ ▁() ▁হল ▁জর্ডানের ▁ইর বি ... (+7 more)` | 17 |
|
| 117 |
+
| 32k | `▁ব নী ▁কেন ান াহ ▁() ▁হল ▁জর্ডানের ▁ইর বি ... (+7 more)` | 17 |
|
| 118 |
+
| 64k | `▁বনী ▁কেন ানাহ ▁() ▁হল ▁জর্ডানের ▁ইর বিড ▁গভর্নরেটের ▁একটি ... (+4 more)` | 14 |
|
|
|
|
|
|
|
| 119 |
|
| 120 |
+
**Sample 3:** `উপভাষাতত্ত্ব () ভাষাবিজ্ঞানের একটি উপশাখা যেখানে ভাষার ভৌগোলিক বৈচিত্র্য নিয়ে গ...`
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|
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|
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|
|
| 121 |
|
| 122 |
| Vocab | Tokens | Count |
|
| 123 |
|-------|--------|-------|
|
| 124 |
+
| 8k | `▁উপ ভাষ াত ত্ত্ব ▁() ▁ভাষ াবি জ্ঞ ানের ▁একটি ... (+25 more)` | 35 |
|
| 125 |
+
| 16k | `▁উপ ভাষ াত ত্ত্ব ▁() ▁ভাষ াবিজ্ঞ ানের ▁একটি ▁উপ ... (+22 more)` | 32 |
|
| 126 |
+
| 32k | `▁উপভাষ াত ত্ত্ব ▁() ▁ভাষাবিজ্ঞানের ▁একটি ▁উপ শাখা ▁যেখানে ▁ভাষার ... (+17 more)` | 27 |
|
| 127 |
+
| 64k | `▁উপভাষ াতত্ত্ব ▁() ▁ভাষাবিজ্ঞানের ▁একটি ▁উপশাখা ▁যেখানে ▁ভাষার ▁ভৌগোলিক ▁বৈচিত্র্য ... (+15 more)` | 25 |
|
| 128 |
|
| 129 |
|
| 130 |
### Key Findings
|
| 131 |
|
| 132 |
+
- **Best Compression:** 64k achieves 5.044x compression
|
| 133 |
+
- **Lowest UNK Rate:** 8k with 0.0982% unknown tokens
|
| 134 |
- **Trade-off:** Larger vocabularies improve compression but increase model size
|
| 135 |
- **Recommendation:** 32k vocabulary provides optimal balance for production use
|
| 136 |
|
|
|
|
| 139 |
|
| 140 |

|
| 141 |
|
| 142 |
+

|
| 143 |
+
|
| 144 |

|
| 145 |
|
| 146 |
### Results
|
| 147 |
|
| 148 |
+
| N-gram | Variant | Perplexity | Entropy | Unique N-grams | Top-100 Coverage | Top-1000 Coverage |
|
| 149 |
+
|--------|---------|------------|---------|----------------|------------------|-------------------|
|
| 150 |
+
| **2-gram** | Word | 291,514 | 18.15 | 1,574,708 | 4.7% | 13.8% |
|
| 151 |
+
| **2-gram** | Subword | 2,633 🏆 | 11.36 | 151,712 | 33.5% | 66.9% |
|
| 152 |
+
| **3-gram** | Word | 772,868 | 19.56 | 2,366,241 | 2.2% | 7.8% |
|
| 153 |
+
| **3-gram** | Subword | 26,877 | 14.71 | 1,149,281 | 12.1% | 33.1% |
|
| 154 |
+
| **4-gram** | Word | 1,492,191 | 20.51 | 3,512,891 | 1.8% | 5.9% |
|
| 155 |
+
| **4-gram** | Subword | 176,159 | 17.43 | 5,668,680 | 6.6% | 19.0% |
|
| 156 |
+
| **5-gram** | Word | 1,031,104 | 19.98 | 2,302,686 | 2.2% | 6.7% |
|
| 157 |
+
| **5-gram** | Subword | 672,872 | 19.36 | 12,813,291 | 4.0% | 12.3% |
|
| 158 |
|
| 159 |
### Top 5 N-grams by Size
|
| 160 |
|
| 161 |
+
**2-grams (Word):**
|
| 162 |
+
|
| 163 |
+
| Rank | N-gram | Count |
|
| 164 |
+
|------|--------|-------|
|
| 165 |
+
| 1 | `করা হয়` | 178,320 |
|
| 166 |
+
| 2 | `তথ্যসূত্র বহিঃসংযোগ` | 62,509 |
|
| 167 |
+
| 3 | `করা হয়েছিল` | 55,266 |
|
| 168 |
+
| 4 | `করা হয়েছে` | 52,752 |
|
| 169 |
+
| 5 | `হয় এবং` | 47,516 |
|
| 170 |
+
|
| 171 |
+
**3-grams (Word):**
|
| 172 |
|
| 173 |
| Rank | N-gram | Count |
|
| 174 |
|------|--------|-------|
|
| 175 |
+
| 1 | `থেকে সাল পর্যন্ত` | 15,509 |
|
| 176 |
+
| 2 | `করা হয় এবং` | 12,875 |
|
| 177 |
+
| 3 | `দায়িত্ব পালন করেন` | 11,918 |
|
| 178 |
+
| 4 | `উপর ভিত্তি করে` | 11,195 |
|
| 179 |
+
| 5 | `করা যেতে পারে` | 11,181 |
|
| 180 |
|
| 181 |
+
**4-grams (Word):**
|
| 182 |
|
| 183 |
| Rank | N-gram | Count |
|
| 184 |
|------|--------|-------|
|
| 185 |
+
| 1 | `তথ্যসূত্র বহিঃসংযোগ জন্ম ব্যক্তি` | 6,636 |
|
| 186 |
+
| 2 | `সংসদ সদস্য সংসদ সদস্য` | 6,370 |
|
| 187 |
+
| 3 | `হিসেবে দায়িত্ব পালন করেন` | 5,513 |
|
| 188 |
+
| 4 | `এপ্রিল জুন জুলাই সেপ্টেম্বর` | 5,102 |
|
| 189 |
+
| 5 | `জুলাই সেপ্টেম্বর অক্টোবর ডিসেম্বর` | 5,100 |
|
| 190 |
|
| 191 |
+
**5-grams (Word):**
|
| 192 |
|
| 193 |
| Rank | N-gram | Count |
|
| 194 |
|------|--------|-------|
|
| 195 |
+
| 1 | `জুন জুলাই সেপ্টেম্বর অক্টোবর ডিসেম্বর` | 5,049 |
|
| 196 |
+
| 2 | `এপ্রিল জুন জুলাই সেপ্টেম্বর অক্টোবর` | 5,048 |
|
| 197 |
+
| 3 | `মার্চ এপ্রিল জুন জুলাই সেপ্টেম্বর` | 5,040 |
|
| 198 |
+
| 4 | `জানুয়ারি মার্চ এপ্রিল জুন জুলাই` | 5,039 |
|
| 199 |
+
| 5 | `সদস্য সংসদ সদস্য সংসদ সদস্য` | 4,613 |
|
| 200 |
+
|
| 201 |
+
**2-grams (Subword):**
|
| 202 |
+
|
| 203 |
+
| Rank | N-gram | Count |
|
| 204 |
+
|------|--------|-------|
|
| 205 |
+
| 1 | `র _` | 10,460,613 |
|
| 206 |
+
| 2 | `_ এ` | 4,233,657 |
|
| 207 |
+
| 3 | `ন _` | 4,097,869 |
|
| 208 |
+
| 4 | `। _` | 3,608,688 |
|
| 209 |
+
| 5 | `_ ক` | 3,135,335 |
|
| 210 |
+
|
| 211 |
+
**3-grams (Subword):**
|
| 212 |
+
|
| 213 |
+
| Rank | N-gram | Count |
|
| 214 |
+
|------|--------|-------|
|
| 215 |
+
| 1 | `_ ক রে` | 1,380,255 |
|
| 216 |
+
| 2 | `এ বং _` | 1,266,527 |
|
| 217 |
+
| 3 | `_ এ বং` | 1,265,068 |
|
| 218 |
+
| 4 | `_ এ ক` | 991,360 |
|
| 219 |
+
| 5 | `ন । _` | 910,746 |
|
| 220 |
+
|
| 221 |
+
**4-grams (Subword):**
|
| 222 |
+
|
| 223 |
+
| Rank | N-gram | Count |
|
| 224 |
+
|------|--------|-------|
|
| 225 |
+
| 1 | `_ এ বং _` | 1,263,055 |
|
| 226 |
+
| 2 | `_ এ ক টি` | 584,296 |
|
| 227 |
+
| 3 | `এ ক টি _` | 578,361 |
|
| 228 |
+
| 4 | `_ তি নি _` | 473,133 |
|
| 229 |
+
| 5 | `_ ক রা _` | 429,980 |
|
| 230 |
+
|
| 231 |
+
**5-grams (Subword):**
|
| 232 |
+
|
| 233 |
+
| Rank | N-gram | Count |
|
| 234 |
+
|------|--------|-------|
|
| 235 |
+
| 1 | `_ এ ক টি _` | 571,779 |
|
| 236 |
+
| 2 | `_ হ য় । _` | 358,749 |
|
| 237 |
+
| 3 | `র _ জ ��্য _` | 344,350 |
|
| 238 |
+
| 4 | `_ ক রা _ হ` | 325,163 |
|
| 239 |
+
| 5 | `_ ক রে ন ।` | 253,567 |
|
| 240 |
|
| 241 |
|
| 242 |
### Key Findings
|
| 243 |
|
| 244 |
+
- **Best Perplexity:** 2-gram (subword) with 2,633
|
| 245 |
- **Entropy Trend:** Decreases with larger n-grams (more predictable)
|
| 246 |
+
- **Coverage:** Top-1000 patterns cover ~12% of corpus
|
| 247 |
- **Recommendation:** 4-gram or 5-gram for best predictive performance
|
| 248 |
|
| 249 |
---
|
|
|
|
| 251 |
|
| 252 |

|
| 253 |
|
| 254 |
+

|
| 255 |
+
|
| 256 |

|
| 257 |
|
| 258 |
### Results
|
| 259 |
|
| 260 |
+
| Context | Variant | Avg Entropy | Perplexity | Branching Factor | Unique Contexts | Predictability |
|
| 261 |
+
|---------|---------|-------------|------------|------------------|-----------------|----------------|
|
| 262 |
+
| **1** | Word | 0.8427 | 1.793 | 11.19 | 2,081,488 | 15.7% |
|
| 263 |
+
| **1** | Subword | 0.9831 | 1.977 | 14.53 | 30,042 | 1.7% |
|
| 264 |
+
| **2** | Word | 0.3490 | 1.274 | 2.13 | 23,273,031 | 65.1% |
|
| 265 |
+
| **2** | Subword | 0.7496 | 1.681 | 6.59 | 436,358 | 25.0% |
|
| 266 |
+
| **3** | Word | 0.1187 | 1.086 | 1.25 | 49,621,155 | 88.1% |
|
| 267 |
+
| **3** | Subword | 0.5931 | 1.508 | 4.11 | 2,877,364 | 40.7% |
|
| 268 |
+
| **4** | Word | 0.0412 🏆 | 1.029 | 1.07 | 61,780,303 | 95.9% |
|
| 269 |
+
| **4** | Subword | 0.5053 | 1.419 | 2.78 | 11,819,297 | 49.5% |
|
| 270 |
|
| 271 |
+
### Generated Text Samples (Word-based)
|
| 272 |
|
| 273 |
+
Below are text samples generated from each word-based Markov chain model:
|
| 274 |
|
| 275 |
**Context Size 1:**
|
| 276 |
|
| 277 |
+
1. `এবং পেনাল্টি শুট করা ঐতিহ্যগতভাবে মে তারিখে স্বাগতিক নিউজিল্যান্ড পুরুষ দীর্ঘ এবং ফোকসোনমি সালে u1 ১...`
|
| 278 |
+
2. `ও বিদ্রোহী দুর্গগুলির ধ্বংসাবশেষ এবং মহিলা ফুটবল ক্লাবের দৃশ্যের মিল মালিক মুম্বাইয়ে গুজরাটি ভাষায়...`
|
| 279 |
+
3. `হয় যা মামলুকের পদক্ষেপকে ইসরায়েল বেইট শেমেশের কাছে উন্মুক্ত এবং বাবা মাকে ডেকে পিছনে চার্জার কেইস`
|
| 280 |
|
| 281 |
**Context Size 2:**
|
| 282 |
|
| 283 |
+
1. `করা হয় ১৫ নভেম্বর the day of francophonie ২০ মার্চ রাজ্য সরকার মাদুরাইয়ে দুটি আইটি ভিত্তিক সরঞ্জাম...`
|
| 284 |
+
2. `তথ্যসূত্র বহিঃসংযোগ উপজেলার ইউনিয়ন বিভাগের ইউনিয়ন জেলার ইউনিয়ন বিভাগের ইউনিয়ন জেলার ইউনিয়ন পরিষ...`
|
| 285 |
+
3. `করা হয়েছিল যে সামাজিক প্রভাবের প্রক্রিয়া যার মাধ্যমে গুগল টক ক্লায়েন্ট তৈরি করেন texier charles r...`
|
| 286 |
|
| 287 |
**Context Size 3:**
|
| 288 |
|
| 289 |
+
1. `থেকে সাল পর্যন্ত শাখাহার ইউনিয়নের পরপর পাঁচমেয়াদে নির্বাচিত চেয়ারম্যান ছিলেন তিনি থেকে সময়কালে অ...`
|
| 290 |
+
2. `করা হয় এবং এই ডকুমেন্ট সম্মেলনে আ��োচনা হওয়ার পর সেখানেই একটি মাদরাসা প্রতিষ্ঠার ব্যাপারে অভিমত ব্য...`
|
| 291 |
+
3. `দায়িত্ব পালন করেন যেখানে তিনি দ্বিতীয় স্থান অধিকার করে সমালোচনামূলক প্রতিক্রিয়া রিভিউ অ্যাগ্রিগেট...`
|
| 292 |
|
| 293 |
**Context Size 4:**
|
| 294 |
|
| 295 |
+
1. `তথ্যসূত্র বহিঃসংযোগ জন্ম ব্যক্তি কোরীয় চলচ্চিত্র অভিনেত্রী কোরীয় নারী আইডল কোরীয় নারী মডেল কোরীয়...`
|
| 296 |
+
2. `সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য সংসদ সদস্য স...`
|
| 297 |
+
3. `হিসেবে দায়িত্ব পালন করেন জাতীয় সংসদের স্পিকার উপরাষ্ট্রপতি নিয়োগের বিধান না থাকায় রাষ্ট্রপতির অব...`
|
| 298 |
+
|
| 299 |
+
|
| 300 |
+
### Generated Text Samples (Subword-based)
|
| 301 |
+
|
| 302 |
+
Below are text samples generated from each subword-based Markov chain model:
|
| 303 |
+
|
| 304 |
+
**Context Size 1:**
|
| 305 |
+
|
| 306 |
+
1. `_প্রান্তে_সারকারীতামসদর_শের`
|
| 307 |
+
2. `র_আবহ_নের_থাকে_জেদেরজা`
|
| 308 |
+
3. `ন_সাইকে_স_পরিলাক্সিকাশ্মীর_`
|
| 309 |
+
|
| 310 |
+
**Context Size 2:**
|
| 311 |
+
|
| 312 |
+
1. `র_ভূপৃষ্ঠতলের_জনসংখ্যান_একা`
|
| 313 |
+
2. `_এবং_ডুবে_ঝুঁকিপূর্ণ_ছিলেন,_`
|
| 314 |
+
3. `ন_নাট্যধর্মীয়_লেজে_দৃশ্য_চলচ্চি`
|
| 315 |
+
|
| 316 |
+
**Context Size 3:**
|
| 317 |
+
|
| 318 |
+
1. `_করেন_এবং_সর্বোচ্চ_কানাডাব্যাপী_`
|
| 319 |
+
2. `এবং_এর_মাত্র_এবং_"প্রক্সিমালি"`
|
| 320 |
+
3. `_এবং_ওল্ফের_একটি_হল_৬৪-`
|
| 321 |
+
|
| 322 |
+
**Context Size 4:**
|
| 323 |
+
|
| 324 |
+
1. `_এবং_তাদের_তালিকা_১৬৩_±_০`
|
| 325 |
+
2. `_একটি_বিরোধ_দেখেন।_সাম্রাজ্যের_`
|
| 326 |
+
3. `একটি_কাজ_শুরু,_সালেই_প্রায়_৭`
|
| 327 |
|
| 328 |
|
| 329 |
### Key Findings
|
| 330 |
|
| 331 |
+
- **Best Predictability:** Context-4 (word) with 95.9% predictability
|
| 332 |
- **Branching Factor:** Decreases with context size (more deterministic)
|
| 333 |
+
- **Memory Trade-off:** Larger contexts require more storage (11,819,297 contexts)
|
| 334 |
- **Recommendation:** Context-3 or Context-4 for text generation
|
| 335 |
|
| 336 |
---
|
|
|
|
| 346 |
|
| 347 |
| Metric | Value |
|
| 348 |
|--------|-------|
|
| 349 |
+
| Vocabulary Size | 838,913 |
|
| 350 |
+
| Total Tokens | 71,898,290 |
|
| 351 |
+
| Mean Frequency | 85.70 |
|
| 352 |
| Median Frequency | 4 |
|
| 353 |
+
| Frequency Std Dev | 2805.67 |
|
| 354 |
|
| 355 |
### Most Common Words
|
| 356 |
|
| 357 |
| Rank | Word | Frequency |
|
| 358 |
|------|------|-----------|
|
| 359 |
+
| 1 | এবং | 1,267,871 |
|
| 360 |
+
| 2 | ও | 702,980 |
|
| 361 |
+
| 3 | হয় | 618,329 |
|
| 362 |
+
| 4 | করে | 616,816 |
|
| 363 |
+
| 5 | একটি | 586,525 |
|
| 364 |
+
| 6 | তিনি | 495,350 |
|
| 365 |
+
| 7 | করা | 454,721 |
|
| 366 |
+
| 8 | থেকে | 424,445 |
|
| 367 |
+
| 9 | এই | 402,971 |
|
| 368 |
+
| 10 | তার | 388,104 |
|
| 369 |
|
| 370 |
### Least Common Words (from vocabulary)
|
| 371 |
|
| 372 |
| Rank | Word | Frequency |
|
| 373 |
|------|------|-----------|
|
| 374 |
+
| 1 | সণ্ডিলা | 2 |
|
| 375 |
+
| 2 | শূকরক্ষেত | 2 |
|
| 376 |
+
| 3 | প্লীপেন | 2 |
|
| 377 |
+
| 4 | মস্ম্যান | 2 |
|
| 378 |
+
| 5 | শোরোশ | 2 |
|
| 379 |
+
| 6 | yohanna | 2 |
|
| 380 |
+
| 7 | katanacho | 2 |
|
| 381 |
+
| 8 | শোরোশের | 2 |
|
| 382 |
+
| 9 | ট্রাঞ্চবলের | 2 |
|
| 383 |
+
| 10 | হুলশফ | 2 |
|
| 384 |
|
| 385 |
### Zipf's Law Analysis
|
| 386 |
|
| 387 |
| Metric | Value |
|
| 388 |
|--------|-------|
|
| 389 |
+
| Zipf Coefficient | 1.0269 |
|
| 390 |
+
| R² (Goodness of Fit) | 0.987733 |
|
| 391 |
| Adherence Quality | **excellent** |
|
| 392 |
|
| 393 |
### Coverage Analysis
|
| 394 |
|
| 395 |
| Top N Words | Coverage |
|
| 396 |
|-------------|----------|
|
| 397 |
+
| Top 100 | 23.9% |
|
| 398 |
+
| Top 1,000 | 50.1% |
|
| 399 |
+
| Top 5,000 | 71.3% |
|
| 400 |
+
| Top 10,000 | 78.8% |
|
| 401 |
|
| 402 |
### Key Findings
|
| 403 |
|
| 404 |
+
- **Zipf Compliance:** R²=0.9877 indicates excellent adherence to Zipf's law
|
| 405 |
+
- **High Frequency Dominance:** Top 100 words cover 23.9% of corpus
|
| 406 |
+
- **Long Tail:** 828,913 words needed for remaining 21.2% coverage
|
| 407 |
|
| 408 |
---
|
| 409 |
## 5. Word Embeddings Evaluation
|
|
|
|
| 416 |
|
| 417 |

|
| 418 |
|
|
|
|
| 419 |
|
| 420 |
+
### 5.1 Cross-Lingual Alignment
|
| 421 |
+
|
| 422 |
+

|
| 423 |
+
|
| 424 |
+

|
| 425 |
+
|
| 426 |
+
|
| 427 |
+
### 5.2 Model Comparison
|
| 428 |
+
|
| 429 |
+
| Model | Dimension | Isotropy | Semantic Density | Alignment R@1 | Alignment R@10 |
|
| 430 |
+
|-------|-----------|----------|------------------|---------------|----------------|
|
| 431 |
+
| **mono_32d** | 32 | 0.8095 🏆 | 0.3709 | N/A | N/A |
|
| 432 |
+
| **mono_64d** | 64 | 0.8011 | 0.2937 | N/A | N/A |
|
| 433 |
+
| **mono_128d** | 128 | 0.7560 | 0.2281 | N/A | N/A |
|
| 434 |
+
| **aligned_32d** | 32 | 0.8095 | 0.3802 | 0.0980 | 0.4600 |
|
| 435 |
+
| **aligned_64d** | 64 | 0.8011 | 0.2992 | 0.2280 | 0.6000 |
|
| 436 |
+
| **aligned_128d** | 128 | 0.7560 | 0.2319 | 0.3880 | 0.7640 |
|
| 437 |
|
| 438 |
### Key Findings
|
| 439 |
|
| 440 |
+
- **Best Isotropy:** mono_32d with 0.8095 (more uniform distribution)
|
| 441 |
+
- **Semantic Density:** Average pairwise similarity of 0.3007. Lower values indicate better semantic separation.
|
| 442 |
+
- **Alignment Quality:** Aligned models achieve up to 38.8% R@1 in cross-lingual retrieval.
|
| 443 |
+
- **Recommendation:** 128d aligned for best cross-lingual performance
|
| 444 |
|
| 445 |
---
|
| 446 |
+
## 6. Morphological Analysis (Experimental)
|
| 447 |
+
|
| 448 |
+
This section presents an automated morphological analysis derived from the statistical divergence between word-level and subword-level models. By analyzing where subword predictability spikes and where word-level coverage fails, we can infer linguistic structures without supervised data.
|
| 449 |
+
|
| 450 |
+
### 6.1 Productivity & Complexity
|
| 451 |
+
|
| 452 |
+
| Metric | Value | Interpretation | Recommendation |
|
| 453 |
+
|--------|-------|----------------|----------------|
|
| 454 |
+
| Productivity Index | **5.000** | High morphological productivity | Reliable analysis |
|
| 455 |
+
| Idiomaticity Gap | **-0.452** | Low formulaic content | - |
|
| 456 |
+
|
| 457 |
+
### 6.2 Affix Inventory (Productive Units)
|
| 458 |
+
|
| 459 |
+
These are the most productive prefixes and suffixes identified by sampling the vocabulary for global substitutability patterns. A unit is considered an affix if stripping it leaves a valid stem that appears in other contexts.
|
| 460 |
+
|
| 461 |
+
#### Productive Prefixes
|
| 462 |
+
| Prefix | Examples |
|
| 463 |
+
|--------|----------|
|
| 464 |
+
|
| 465 |
+
#### Productive Suffixes
|
| 466 |
+
| Suffix | Examples |
|
| 467 |
+
|--------|----------|
|
| 468 |
+
| `-র` | মোহানপুর, গুরবানীর, শান্তির |
|
| 469 |
+
| `-ের` | সেরাদের, সাইট্রেটের, লিওঁনের |
|
| 470 |
+
| `-ার` | ভোজভোদিনার, স্পেকটার, মনোরোগবিদ্যার |
|
| 471 |
+
| `-কে` | দুঃস্বপ্নকে, ক্লাইনকে, হাংচৌকে |
|
| 472 |
+
|
| 473 |
+
### 6.3 Bound Stems (Lexical Roots)
|
| 474 |
+
|
| 475 |
+
Bound stems are high-frequency subword units that are semantically cohesive but rarely appear as standalone words. These often correspond to the 'core' of a word that requires inflection or derivation to be valid.
|
| 476 |
+
|
| 477 |
+
| Stem | Cohesion | Substitutability | Examples |
|
| 478 |
+
|------|----------|------------------|----------|
|
| 479 |
+
| `ress` | 3.30x | 93 contexts | press, dress, cress |
|
| 480 |
+
| `nter` | 3.28x | 88 contexts | enter, unter, anter |
|
| 481 |
+
| `atio` | 3.33x | 77 contexts | ratio, ation, natio |
|
| 482 |
+
| `ctio` | 3.38x | 50 contexts | action, lectio, suction |
|
| 483 |
+
| `stor` | 2.96x | 87 contexts | astor, stora, stori |
|
| 484 |
+
| `mber` | 3.07x | 60 contexts | umber, ember, amber |
|
| 485 |
+
| `ence` | 3.40x | 37 contexts | pence, fence, bence |
|
| 486 |
+
| `ersi` | 3.11x | 43 contexts | ersin, persia, persie |
|
| 487 |
+
| `nati` | 3.22x | 34 contexts | natio, nativa, nation |
|
| 488 |
+
| `ical` | 3.23x | 33 contexts | epical, apical, micali |
|
| 489 |
+
| `ieve` | 3.35x | 25 contexts | sieve, lieve, pieve |
|
| 490 |
+
| `embe` | 3.34x | 20 contexts | ember, rember, embers |
|
| 491 |
+
|
| 492 |
+
### 6.4 Affix Compatibility (Co-occurrence)
|
| 493 |
+
|
| 494 |
+
This table shows which prefixes and suffixes most frequently co-occur on the same stems, revealing the 'stacking' rules of the language's morphology.
|
| 495 |
+
|
| 496 |
+
*No significant affix co-occurrences detected.*
|
| 497 |
+
|
| 498 |
+
|
| 499 |
+
### 6.5 Recursive Morpheme Segmentation
|
| 500 |
+
|
| 501 |
+
Using **Recursive Hierarchical Substitutability**, we decompose complex words into their constituent morphemes. This approach handles nested affixes (e.g., `prefix-prefix-root-suffix`).
|
| 502 |
+
|
| 503 |
+
| Word | Suggested Split | Confidence | Stem |
|
| 504 |
+
|------|-----------------|------------|------|
|
| 505 |
+
| স্যাপারের | **`স্যাপ-ার-ের`** | 6.0 | `স্যাপ` |
|
| 506 |
+
| ক্রুসেডারের | **`ক্রুসেড-ার-ের`** | 6.0 | `ক্রুসেড` |
|
| 507 |
+
| পরিষদসমূহের | **`পরিষদসমূহ-ের`** | 4.5 | `পরিষদসমূহ` |
|
| 508 |
+
| তন্তুগুলিকে | **`তন্তুগুলি-কে`** | 4.5 | `তন্তুগুলি` |
|
| 509 |
+
| ইতালিয়াসের | **`ইতালিয়াস-ের`** | 4.5 | `ইতালিয়াস` |
|
| 510 |
+
| দ্বিতীয়কে | **`দ্বিতীয়-কে`** | 4.5 | `দ্বিতীয়` |
|
| 511 |
+
| অ্যাসপার্টের | **`অ্যাসপার্ট-ের`** | 4.5 | `অ্যাসপার্ট` |
|
| 512 |
+
| পেটারসেনের | **`পেটারসেন-ের`** | 4.5 | `পেটারসেন` |
|
| 513 |
+
| হার্জেগোভিনাকে | **`হার্জেগোভিনা-কে`** | 4.5 | `হার্জেগোভিনা` |
|
| 514 |
+
| অ্যাক্টিনের | **`অ্যাক্টিন-ের`** | 4.5 | `অ্যাক্টিন` |
|
| 515 |
+
| মাইগ্রেশনের | **`মাইগ্রেশন-ের`** | 4.5 | `মাইগ্রেশন` |
|
| 516 |
+
| এরদোয়ানকে | **`এরদোয়ান-কে`** | 4.5 | `এরদোয়ান` |
|
| 517 |
+
| ক্রীড়াঙ্গণের | **`ক্রীড়াঙ্গণ-ের`** | 4.5 | `ক্রীড়াঙ্গণ` |
|
| 518 |
+
| অ্যাপোপটোসিসের | **`অ্যাপোপটোসিস-ের`** | 4.5 | `অ্যাপোপটোসিস` |
|
| 519 |
+
| জার্নালকে | **`জার্নাল-কে`** | 4.5 | `জার্নাল` |
|
| 520 |
+
|
| 521 |
+
### 6.6 Linguistic Interpretation
|
| 522 |
+
|
| 523 |
+
> **Automated Insight:**
|
| 524 |
+
The language Bangla shows high morphological productivity. The subword models are significantly more efficient than word models, suggesting a rich system of affixation or compounding.
|
| 525 |
+
|
| 526 |
+
---
|
| 527 |
+
## 7. Summary & Recommendations
|
| 528 |
|
| 529 |

|
| 530 |
|
|
|
|
| 532 |
|
| 533 |
| Component | Recommended | Rationale |
|
| 534 |
|-----------|-------------|-----------|
|
| 535 |
+
| Tokenizer | **64k BPE** | Best compression (5.04x) |
|
| 536 |
+
| N-gram | **2-gram** | Lowest perplexity (2,633) |
|
| 537 |
+
| Markov | **Context-4** | Highest predictability (95.9%) |
|
| 538 |
| Embeddings | **100d** | Balanced semantic capture and isotropy |
|
| 539 |
|
| 540 |
+
|
| 541 |
---
|
| 542 |
## Appendix: Metrics Glossary & Interpretation Guide
|
| 543 |
|
|
|
|
| 727 |
author = {Kamali, Omar},
|
| 728 |
title = {Wikilangs: Open NLP Models for Wikipedia Languages},
|
| 729 |
year = {2025},
|
| 730 |
+
doi = {10.5281/zenodo.18073153},
|
| 731 |
+
publisher = {Zenodo},
|
| 732 |
url = {https://huggingface.co/wikilangs}
|
| 733 |
institution = {Omneity Labs}
|
| 734 |
}
|
|
|
|
| 744 |
- 🤗 Models: [huggingface.co/wikilangs](https://huggingface.co/wikilangs)
|
| 745 |
- 📊 Data: [wikipedia-monthly](https://huggingface.co/datasets/omarkamali/wikipedia-monthly)
|
| 746 |
- 👤 Author: [Omar Kamali](https://huggingface.co/omarkamali)
|
| 747 |
+
- 🤝 Sponsor: [Featherless AI](https://featherless.ai)
|
| 748 |
---
|
| 749 |
*Generated by Wikilangs Models Pipeline*
|
| 750 |
|
| 751 |
+
*Report Date: 2026-01-07 08:35:42*
|
models/embeddings/aligned/bn_128d.bin
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|
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models/subword_ngram/bn_4gram_subword_metadata.json
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models/vocabulary/bn_vocabulary.parquet
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