---
license: mit
task_categories:
- token-classification
language:
- en
dataset_info:
  features:
  - name: id
    dtype: string
  - name: tokens
    sequence: string
  - name: ner_tags
    sequence:
      class_label:
        names:
          '0': O
          '1': B-Disease
          '2': I-Disease
          '3': B-Chemical
          '4': I-Chemical
  splits:
  - name: test
    num_bytes: 1198054
    num_examples: 300
  - name: train
    num_bytes: 6049819
    num_examples: 1500
  download_size: 1836596
  dataset_size: 7247873
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
  - split: test
    path: data/test-*
---

## Benchmark dataset bc5cdr
This dataset was generated by the Data preprocessing step of the NERFAIR workflow (More information: https://github.com/YasCoMa/ner-fair-workflow )

Original dataset:
Li, Jiao, Yueping Sun, Robin J. Johnson, Daniela Sciaky, Chih-Hsuan Wei, Robert Leaman, Allan Peter Davis, Carolyn J. Mattingly, Thomas C. Wiegers, and Zhiyong Lu. 2016. “BioCreative V CDR Task Corpus: A Resource for Chemical Disease Relation Extraction.” Database: The Journal of Biological Databases and Curation 2016 (May): baw068.