{
  "conll2003": {
    "description": "The shared task of CoNLL-2003 concerns language-independent named entity recognition. We will concentrate on\nfour types of named entities: persons, locations, organizations and names of miscellaneous entities that do\nnot belong to the previous three groups.\n\nThe CoNLL-2003 shared task data files contain four columns separated by a single space. Each word has been put on\na separate line and there is an empty line after each sentence. The first item on each line is a word, the second\na part-of-speech (POS) tag, the third a syntactic chunk tag and the fourth the named entity tag. The chunk tags\nand the named entity tags have the format I-TYPE which means that the word is inside a phrase of type TYPE. Only\nif two phrases of the same type immediately follow each other, the first word of the second phrase will have tag\nB-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\ntagging scheme, whereas the original dataset uses IOB1.\n\nFor more details see https://www.clips.uantwerpen.be/conll2003/ner/ and https://www.aclweb.org/anthology/W03-0419\n",
    "citation": "@inproceedings{tjong-kim-sang-de-meulder-2003-introduction,\n    title = \"Introduction to the {C}o{NLL}-2003 Shared Task: Language-Independent Named Entity Recognition\",\n    author = \"Tjong Kim Sang, Erik F.  and\n      De Meulder, Fien\",\n    booktitle = \"Proceedings of the Seventh Conference on Natural Language Learning at {HLT}-{NAACL} 2003\",\n    year = \"2003\",\n    url = \"https://www.aclweb.org/anthology/W03-0419\",\n    pages = \"142--147\",\n}\n",
    "license": "",
    "features": {
      "id": {
        "dtype": "string",
        "id": null,
        "_type": "Value"
      },
      "tokens": {
        "feature": {
          "dtype": "string",
          "id": null,
          "_type": "Value"
        },
        "length": -1,
        "id": null,
        "_type": "Sequence"
      },
      "pos_tags": {
        "feature": {
          "num_classes": 47,
          "names": [
            "\"",
            "''",
            "#",
            "$",
            "(",
            ")",
            ",",
            ".",
            ":",
            "``",
            "CC",
            "CD",
            "DT",
            "EX",
            "FW",
            "IN",
            "JJ",
            "JJR",
            "JJS",
            "LS",
            "MD",
            "NN",
            "NNP",
            "NNPS",
            "NNS",
            "NN|SYM",
            "PDT",
            "POS",
            "PRP",
            "PRP$",
            "RB",
            "RBR",
            "RBS",
            "RP",
            "SYM",
            "TO",
            "UH",
            "VB",
            "VBD",
            "VBG",
            "VBN",
            "VBP",
            "VBZ",
            "WDT",
            "WP",
            "WP$",
            "WRB"
          ],
          "id": null,
          "_type": "ClassLabel"
        },
        "length": -1,
        "id": null,
        "_type": "Sequence"
      },
      "chunk_tags": {
        "feature": {
          "num_classes": 23,
          "names": [
            "O",
            "B-ADJP",
            "I-ADJP",
            "B-ADVP",
            "I-ADVP",
            "B-CONJP",
            "I-CONJP",
            "B-INTJ",
            "I-INTJ",
            "B-LST",
            "I-LST",
            "B-NP",
            "I-NP",
            "B-PP",
            "I-PP",
            "B-PRT",
            "I-PRT",
            "B-SBAR",
            "I-SBAR",
            "B-UCP",
            "I-UCP",
            "B-VP",
            "I-VP"
          ],
          "id": null,
          "_type": "ClassLabel"
        },
        "length": -1,
        "id": null,
        "_type": "Sequence"
      },
      "ner_tags": {
        "feature": {
          "num_classes": 9,
          "names": [
            "O",
            "B-PER",
            "I-PER",
            "B-ORG",
            "I-ORG",
            "B-LOC",
            "I-LOC",
            "B-MISC",
            "I-MISC"
          ],
          "id": null,
          "_type": "ClassLabel"
        },
        "length": -1,
        "id": null,
        "_type": "Sequence"
      }
    },
    "post_processed": null,
    "supervised_keys": null,
    "task_templates": null,
    "builder_name": "conll2003",
    "config_name": "conll2003",
    "version": {
      "version_str": "1.0.0",
      "description": null,
      "major": 1,
      "minor": 0,
      "patch": 0
    },
    "splits": {
      "train": {
        "name": "train",
        "num_bytes": 381,
        "num_examples": 1,
        "dataset_name": "conll2003"
      },
      "validation": {
        "name": "validation",
        "num_bytes": 381,
        "num_examples": 1,
        "dataset_name": "conll2003"
      },
      "test": {
        "name": "test",
        "num_bytes": 381,
        "num_examples": 1,
        "dataset_name": "conll2003"
      }
    },
    "post_processing_size": null
  }
}