xlmr-sentence-splitter – AI Model by Famezz | AlphaNeural AI

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Famezz/
xlmr-sentence-splitter

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sentence-segmentation

sentence-boundary-detection

token-classification

universal_dependencies

FacebookAI/xlm-roberta-large

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XLM-RoBERTa Sentence Splitter

Fine-tuned XLM-RoBERTa-large (560M params) for sentence boundary detection on 8 Universal Dependencies treebanks (4 English, 4 Italian).

Results

	NLTK	spaCy	This model
Macro F1	0.9411	0.9519	0.9863

Usage

bash

git clone https://github.com/LucaTamSapienza/sentence_splitter.git
cd sentence_splitter
pip install -r requirements.txt
python download_model.py
python src/predict.py --input input/ --output output/ --model_path checkpoints/best_xlmr_model.pt

Architecture

XLM-RoBERTa-large -> Dropout(0.1) -> Linear(1024, 1) -> per-token sigmoid

Trained with focal loss (alpha=0.75, gamma=2.0), sliding windows (510 tokens, stride 256), FP16, AdamW (lr=2e-5).

Citation

@misc{tam2026sentencesplitter,
  author = {Luca Tam},
  title = {Sentence Splitter: Fine-tuning XLM-RoBERTa for Sentence Boundary Detection},
  year = {2026},
  url = {https://github.com/LucaTamSapienza/sentence_splitter}
}