Lidor-Mashiach/roberta-large-anli

RoBERTa Large fine tuned on ANLI

Model

This checkpoint is based on FacebookAI/roberta-large.

It was fine tuned only on the combined ANLI training rounds. The training set contained 162,865 premise and hypothesis pairs.

The model predicts one of three labels:

Label	Meaning
0	entailment
1	neutral
2	contradiction

The input order is premise first and hypothesis second.

Evaluation

Accuracy was measured on the combined ANLI held out rounds.

Split	Accuracy	Examples
Development	55.72%	3,200
Test	55.09%	3,200

These values are plain classification accuracy.

The checkpoint was trained on ANLI alone. Comparisons should use the same combined ANLI splits and the same label mapping.

The machine readable results are stored in baseline_eval.json.

Training

Setting	Value
Base model	FacebookAI/roberta-large
Epochs	3
Batch size	16
Gradient accumulation steps	1
Learning rate	0.000008690336386137876
Weight decay	0.09923494287492991
Warmup ratio	0.15352519954015828
Label smoothing	0.0
Adam beta 2	0.98
Maximum sequence length	128
Seed	1299843651
Numerical precision	BF16

The hyperparameters were selected for this model and dataset combination.

The full training record is stored in model_card.json.

Use

Load the repository with AutoTokenizer and AutoModelForSequenceClassification from the Transformers library.

Pass the premise and hypothesis as a text pair.

Use a maximum sequence length of 128 to match training.

Files

File	Purpose
model.safetensors	Model weights
config.json	Architecture and label mapping
tokenizer.json	Tokenizer data
tokenizer_config.json	Tokenizer settings
baseline_eval.json	Evaluation results
model_card.json	Training record and provenance
README.md	Model card

Limitations

The model was trained and evaluated on English ANLI data.

ANLI is adversarial and difficult. Performance on other NLI datasets may differ.

The training accuracy was 98.09%, while held out accuracy was lower. This gap should be considered when using the checkpoint.

The model can inherit errors and biases from the base model and the training data.

The checkpoint has not been evaluated for high risk or safety critical use.

License

The base model FacebookAI/roberta-large is licensed under MIT.

The ANLI training data is licensed under CC BY-NC 4.0.

This checkpoint is released under CC BY-NC 4.0 as a conservative noncommercial choice. Users must follow the terms of the base model and the ANLI dataset.

Use of this checkpoint is limited to noncommercial purposes.

Associated research

This model was trained as part of the following research manuscript:

“Opening the Black Box: Localizing semantic inconsistency in NLI models with Deep k -Nearest Neighbors”

The manuscript is in preparation. It has not been submitted or published.

This section will be updated when a public preprint or an accepted version becomes available.

Citation

Until the paper is public, please cite this model repository:

@misc{mashiach2026robertaanli,
  author = {Lidor Mashiach},
  title = {RoBERTa Large fine tuned on ANLI},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/Lidor-Mashiach/roberta-large-anli}
}

Please also cite the RoBERTa and ANLI papers.

Contact

Questions, corrections, and reproducibility reports can be posted in the Community tab of this repository.