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---
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-Context_Error
          '2': I-Context_Error
          '3': B-Non-query-able
          '4': I-Non-query-able
          '5': B-Not_a_criteria
          '6': I-Not_a_criteria
          '7': B-Qualifier
          '8': I-Qualifier
          '9': B-Parsing_Error
          '10': I-Parsing_Error
          '11': B-Competing_trial
          '12': I-Competing_trial
          '13': B-Temporal
          '14': I-Temporal
          '15': B-Value
          '16': I-Value
          '17': B-Procedure
          '18': I-Procedure
          '19': B-Visit
          '20': I-Visit
          '21': B-Mood
          '22': I-Mood
          '23': B-Measurement
          '24': I-Measurement
          '25': B-Observation
          '26': I-Observation
          '27': B-Intoxication_considerations
          '28': I-Intoxication_considerations
          '29': B-Device
          '30': I-Device
          '31': B-Drug
          '32': I-Drug
          '33': B-Post-eligibility
          '34': I-Post-eligibility
          '35': B-Grammar_Error
          '36': I-Grammar_Error
          '37': B-Undefined_semantics
          '38': I-Undefined_semantics
          '39': B-Negation
          '40': I-Negation
          '41': B-Subjective_judgement
          '42': I-Subjective_judgement
          '43': B-Informed_consent
          '44': I-Informed_consent
          '45': B-c-Requires_causality
          '46': I-c-Requires_causality
          '47': B-Condition
          '48': I-Condition
          '49': B-Line
          '50': I-Line
          '51': B-Multiplier
          '52': I-Multiplier
          '53': B-Pregnancy_considerations
          '54': I-Pregnancy_considerations
          '55': B-Reference_point
          '56': I-Reference_point
          '57': B-Person
          '58': I-Person
          '59': B-Non-representable
          '60': I-Non-representable
  splits:
  - name: test
    num_bytes: 645074
    num_examples: 390
  - name: train
    num_bytes: 3154770
    num_examples: 1950
  download_size: 1183630
  dataset_size: 3799844
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
  - split: test
    path: data/test-*
---

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

Original dataset: Kury, Fabrício, Alex Butler, Chi Yuan, Li-Heng Fu, Yingcheng Sun, Hao Liu, Ida Sim, Simona Carini, and Chunhua Weng. 2020. “Chia, a Large Annotated Corpus of Clinical Trial Eligibility Criteria.” Scientific Data 7 (1): 281.