NIRVLab — WordPiece Tokenizer for Russian XNLI
A WordPiece tokenizer trained from scratch on the Russian (ru) subset
of the facebook/xnli dataset.
Training Details
| Parameter | Value |
|---|---|
| Algorithm | WordPiece (BERT-style) |
| Vocabulary size | 8,000 |
| Special tokens | <s>, <pad>, </s>, <unk>, <mask> |
| Corpus | facebook/xnli / ru — all splits |
| Corpus size | 800,404 sentences |
| Normalizer | NFD + StripAccents + NFC |
| Pre-tokenizer | Whitespace |
| Min frequency | 2 |
| Continuing subword prefix | ## |
Evaluation Metrics
| Metric | Value |
|---|---|
| Tokens / char | 0.2745 |
| Fertility (tokens / word) | 1.8882 |
| Avg sequence length | 22.80 tokens |
| Vocabulary coverage | 1.0000 |
Usage
from transformers import AutoTokenizer
tokenizer = AutoTokenizer.from_pretrained("NIRVLab/xnli-wordpiece-rusia")
tokens = tokenizer("Привет, мир!", return_tensors="pt")
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