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README.md
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---
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license: mit
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language:
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- en
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tags:
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- fill-mask
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- roformer
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- babylm
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pipeline_tag: fill-mask
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---
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# BabyLM RoFormer (10M tokens)
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A BERT-style masked language model trained from scratch on the BabyLM 10M dataset.
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## Model Details
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- **Architecture**: RoFormer (BERT + Rotary Position Embeddings)
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- **Parameters**: ~10M
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- **Training Data**: BabyLM Strict-Small (10M tokens)
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- **Vocabulary**: 16,384 tokens (WordPiece)
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- **Context Length**: 128 tokens
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## Usage
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```python
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from transformers import RoFormerForMaskedLM, RoFormerTokenizer
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model = RoFormerForMaskedLM.from_pretrained("bean4259/babylm-roformer")
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tokenizer = RoFormerTokenizer.from_pretrained("bean4259/babylm-roformer")
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# Fill-mask example
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text = "The cat sat on the [MASK]."
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inputs = tokenizer(text, return_tensors="pt")
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outputs = model(**inputs)
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```
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## Training
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Trained using a custom training loop with:
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- Sequence packing (8.26x compression)
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- AdamW optimizer (lr=1e-4)
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- Linear warmup + decay schedule
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- 10 epochs
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