region:us

!! forked version producing at most 10 items per split !!

The shared task of CoNLL-2003 concerns language-independent named entity recognition. We will concentrate on
four types of named entities: persons, locations, organizations and names of miscellaneous entities that do
not belong to the previous three groups.

The CoNLL-2003 shared task data files contain four columns separated by a single space. Each word has been put on
a separate line and there is an empty line after each sentence. The first item on each line is a word, the second
a part-of-speech (POS) tag, the third a syntactic chunk tag and the fourth the named entity tag. The chunk tags
and the named entity tags have the format I-TYPE which means that the word is inside a phrase of type TYPE. Only
if two phrases of the same type immediately follow each other, the first word of the second phrase will have tag
B-TYPE to show that it starts a new phrase. A word with tag O is not part of a phrase. Note the dataset uses IOB2
tagging scheme, whereas the original dataset uses IOB1.

For more details see https://www.clips.uantwerpen.be/conll2003/ner/ and https://www.aclweb.org/anthology/W03-0419
@inproceedings{tjong-kim-sang-de-meulder-2003-introduction,
    title = "Introduction to the {C}o{NLL}-2003 Shared Task: Language-Independent Named Entity Recognition",
    author = "Tjong Kim Sang, Erik F.  and
      De Meulder, Fien",
    booktitle = "Proceedings of the Seventh Conference on Natural Language Learning at {HLT}-{NAACL} 2003",
    year = "2003",
    url = "https://www.aclweb.org/anthology/W03-0419",
    pages = "142--147",
}
---
dataset_info:
  features:
  - name: id
    dtype: string
  - name: tokens
    sequence: string
  - name: pos_tags
    sequence:
      class_label:
        names:
          '0': '"'
          '1': ''''''
          '2': '#'
          '3': $
          '4': (
          '5': )
          '6': ','
          '7': .
          '8': ':'
          '9': '``'
          '10': CC
          '11': CD
          '12': DT
          '13': EX
          '14': FW
          '15': IN
          '16': JJ
          '17': JJR
          '18': JJS
          '19': LS
          '20': MD
          '21': NN
          '22': NNP
          '23': NNPS
          '24': NNS
          '25': NN|SYM
          '26': PDT
          '27': POS
          '28': PRP
          '29': PRP$
          '30': RB
          '31': RBR
          '32': RBS
          '33': RP
          '34': SYM
          '35': TO
          '36': UH
          '37': VB
          '38': VBD
          '39': VBG
          '40': VBN
          '41': VBP
          '42': VBZ
          '43': WDT
          '44': WP
          '45': WP$
          '46': WRB
  - name: chunk_tags
    sequence:
      class_label:
        names:
          '0': O
          '1': B-ADJP
          '2': I-ADJP
          '3': B-ADVP
          '4': I-ADVP
          '5': B-CONJP
          '6': I-CONJP
          '7': B-INTJ
          '8': I-INTJ
          '9': B-LST
          '10': I-LST
          '11': B-NP
          '12': I-NP
          '13': B-PP
          '14': I-PP
          '15': B-PRT
          '16': I-PRT
          '17': B-SBAR
          '18': I-SBAR
          '19': B-UCP
          '20': I-UCP
          '21': B-VP
          '22': I-VP
  - name: ner_tags
    sequence:
      class_label:
        names:
          '0': O
          '1': B-PER
          '2': I-PER
          '3': B-ORG
          '4': I-ORG
          '5': B-LOC
          '6': I-LOC
          '7': B-MISC
          '8': I-MISC
  config_name: conll2003-mini
  splits:
  - name: train
    num_bytes: 8025
    num_examples: 10
  - name: validation
    num_bytes: 9653
    num_examples: 10
  - name: test
    num_bytes: 6638
    num_examples: 10
  download_size: 982975
  dataset_size: 24316
---
