tner / roberta-large-bc5cdr

tner/roberta-large-bc5cdr

This model is a fine-tuned version of roberta-large on the tner/bc5cdr dataset. Model fine-tuning is done via T-NER 's hyper-parameter search (see the repository for more detail). It achieves the following results on the test set:

• F1 (micro): 0.8840696387239609
• Precision (micro): 0.8728266269249876
• Recall (micro): 0.8956060760526048
• F1 (macro): 0.8797360472482783
• Precision (macro): 0.8684274142690976
• Recall (macro): 0.8913672531528037

The per-entity breakdown of the F1 score on the test set are below:

• chemical: 0.9256943167187788
• disease: 0.8337777777777777

For F1 scores, the confidence interval is obtained by bootstrap as below:

• F1 (micro):
  • 90%: [0.878869501707946, 0.8890795634554179]
  • 95%: [0.8776790106527211, 0.8897422640465147]
• F1 (macro):
  • 90%: [0.878869501707946, 0.8890795634554179]
  • 95%: [0.8776790106527211, 0.8897422640465147]

Full evaluation can be found at metric file of NER and metric file of entity span .

Usage

This model can be used through the tner library . Install the library via pip

pip install tner

and activate model as below.

from tner import TransformersNER
model = TransformersNER("tner/roberta-large-bc5cdr")
model.predict(["Jacob Collier is a Grammy awarded English artist from London"])

It can be used via transformers library but it is not recommended as CRF layer is not supported at the moment.

Training hyperparameters

The following hyperparameters were used during training:

• dataset: ['tner/bc5cdr']
• dataset_split: train
• dataset_name: None
• local_dataset: None
• model: roberta-large
• crf: True
• max_length: 128
• epoch: 15
• batch_size: 64
• lr: 1e-05
• random_seed: 42
• gradient_accumulation_steps: 1
• weight_decay: None
• lr_warmup_step_ratio: 0.1
• max_grad_norm: 10.0

The full configuration can be found at fine-tuning parameter file .

Reference

If you use any resource from T-NER, please consider to cite our paper .

@inproceedings{ushio-camacho-collados-2021-ner,
    title = "{T}-{NER}: An All-Round Python Library for Transformer-based Named Entity Recognition",
    author = "Ushio, Asahi  and
      Camacho-Collados, Jose",
    booktitle = "Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: System Demonstrations",
    month = apr,
    year = "2021",
    address = "Online",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.eacl-demos.7",
    doi = "10.18653/v1/2021.eacl-demos.7",
    pages = "53--62",
    abstract = "Language model (LM) pretraining has led to consistent improvements in many NLP downstream tasks, including named entity recognition (NER). In this paper, we present T-NER (Transformer-based Named Entity Recognition), a Python library for NER LM finetuning. In addition to its practical utility, T-NER facilitates the study and investigation of the cross-domain and cross-lingual generalization ability of LMs finetuned on NER. Our library also provides a web app where users can get model predictions interactively for arbitrary text, which facilitates qualitative model evaluation for non-expert programmers. We show the potential of the library by compiling nine public NER datasets into a unified format and evaluating the cross-domain and cross- lingual performance across the datasets. The results from our initial experiments show that in-domain performance is generally competitive across datasets. However, cross-domain generalization is challenging even with a large pretrained LM, which has nevertheless capacity to learn domain-specific features if fine- tuned on a combined dataset. To facilitate future research, we also release all our LM checkpoints via the Hugging Face model hub.",
}