Datasets:
Tasks:
Token Classification
Modalities:
Text
Formats:
json
Sub-tasks:
named-entity-recognition
Languages:
Czech
Size:
1K - 10K
License:
| annotations_creators: | |
| - expert-generated | |
| language: | |
| - cs | |
| language_creators: | |
| - found | |
| license: | |
| - cc-by-nc-sa-3.0 | |
| multilinguality: | |
| - monolingual | |
| pretty_name: Czech Named Entity Corpus 2.0 | |
| size_categories: | |
| - 1K<n<10K | |
| source_datasets: | |
| - original | |
| tags: | |
| - czech NER | |
| - CNEC | |
| task_categories: | |
| - token-classification | |
| task_ids: | |
| - named-entity-recognition | |
| # Dataset Card for Czech Named Entity Corpus 2.0 | |
| ## Dataset Description | |
| The dataset contains Czech sentences and annotated named entities. Total number of sentences is around 9,000 and total number of entities is around 34,000. (Total means train + validation + test) | |
| ## Dataset Features | |
| Each sample contains: | |
| - `text`: source sentence | |
| - `entities`: list of selected entities. Each entity contains: | |
| - `category_id`: string identifier of the entity category | |
| - `category_str`: human-friendly category name in Czech (verbalizer) | |
| - `start`: index on which the entity starts in the source sentence | |
| - `end`: index on which the entity ends in the source sentence | |
| - `content`: entity content, it was created as `text[start:end]` | |
| - `entity_id`: unique entity string identifier | |
| - `parent_id`: If entity was selected inside another entity (e.g. house number inside address), `parent_id` is the identifier of the parent entity. None otherwise. | |
| The `entity_id` field was checked to be globally unique (across data samples and dataset splits.) | |
| ## Entity categories | |
| The list of the recognized entities (`category_id`, `category_str` pairs): | |
| ```python3 | |
| { | |
| 'A': 'číslo v adrese / kontaktním údaji', | |
| 'ah': 'číslo domu', | |
| 'at': 'telefonní číslo / fax', | |
| 'az': 'PSČ (poštovní směrovací číslo)', | |
| 'C': 'reference/bibliografie', | |
| 'f': 'cizí výraz', | |
| 'g_': 'geografický název - jiný', | |
| 'gc': 'stát/země', | |
| 'gh': 'jméno vodstva', | |
| 'gl': 'přírodní oblast/útvar', | |
| 'gq': 'městská čtvrť', | |
| 'gr': 'území', | |
| 'gs': 'ulice/náměstí', | |
| 'gt': 'kontinent', | |
| 'gu': 'město/zámek', | |
| 'i_': 'instituce - jiná', | |
| 'ia': 'konference/soutěž', | |
| 'ic': 'kulturní/vzdělávací/vědecká instituce', | |
| 'if': 'komerční instituce', | |
| 'io': 'vládní/politická instituce', | |
| 'me': 'emailová adresa', | |
| 'mi': 'URL / internetový odkaz', | |
| 'mn': 'časopis', | |
| 'ms': 'radio/televizní stanice', | |
| 'n_': 'číselný výraz - jiný', | |
| 'na': 'věk', | |
| 'nb': 'číslo stránky/kapitoly/sekce/objektu', | |
| 'nc': 'množství/počet', | |
| 'ni': 'číslo položky', | |
| 'no': 'pořadí', | |
| 'ns': 'sportovní skóre', | |
| 'o_': 'artefakt - jiný', | |
| 'oa': 'umělecké dílo / kulturní artefakt', | |
| 'oe': 'jednotka', | |
| 'om': 'měna', | |
| 'op': 'produkt/výrobek', | |
| 'or': 'zákon/směrnice/listina', | |
| 'P': 'celé jméno', | |
| 'p_': 'jméno - jiné', | |
| 'pc': 'národnost', | |
| 'pd': '(akademický) titul', | |
| 'pf': 'křestní jméno', | |
| 'pm': 'prostřední jméno', | |
| 'pp': 'mýtická/historická postava', | |
| 'ps': 'příjmení', | |
| 's': 'zkratka', | |
| 'T': 'čas/datum', | |
| 'td': 'den', | |
| 'tf': 'svátky', | |
| 'th': 'hodiny/minuty', | |
| 'tm': 'měsíc', | |
| 'ty': 'rok', | |
| } | |
| ``` | |
| ## Dataset Source | |
| The dataset is a preprocessed adaptation of existing CNEC 2.0 dataset [project info](https://ufal.mff.cuni.cz/cnec/cnec2.0), [link to data](https://lindat.mff.cuni.cz/repository/xmlui/handle/11858/00-097C-0000-0023-1B22-8). This adaptation contains (almost) same data, but converted to a convenient format. In addition, we inspected and decided to remove entity categories: `?`, `segm`, `cap`, `lower`, `upper`, which were either undocumented and/or carried little semantic meaning. | |
| The category names (verbalizers) are not in the original dataset. They were added by a Czech native speaker using the available [documentation](https://ufal.mff.cuni.cz/cnec/cnec2.0) and by looking at several occurrences in the data. | |
| ## Citation | |
| Cite authors of the [original dataset](https://lindat.mff.cuni.cz/repository/xmlui/handle/11858/00-097C-0000-0023-1B22-8): | |
| ```bibtex | |
| @misc{11858/00-097C-0000-0023-1B22-8, | |
| title = {Czech Named Entity Corpus 2.0}, | |
| author = {{\v S}ev{\v c}{\'{\i}}kov{\'a}, Magda and {\v Z}abokrtsk{\'y}, Zden{\v e}k and Strakov{\'a}, Jana and Straka, Milan}, | |
| url = {http://hdl.handle.net/11858/00-097C-0000-0023-1B22-8}, | |
| note = {{LINDAT}/{CLARIAH}-{CZ} digital library at the Institute of Formal and Applied Linguistics ({{\'U}FAL}), Faculty of Mathematics and Physics, Charles University}, | |
| copyright = {Attribution-{NonCommercial}-{ShareAlike} 3.0 Unported ({CC} {BY}-{NC}-{SA} 3.0)}, | |
| year = {2014} | |
| } | |
| ``` | |