---
language:
- fr
- ca
- cs
- en
- de
- hu
- pl
- ru
- es
- tr
- no
- lt
- grc
- hbo
- chu
multilinguality:
- multilingual
viewer: false
---


> [!NOTE]
> Dataset origin: https://lindat.mff.cuni.cz/repository/xmlui/handle/11234/1-5478

## Description

CorefUD is a collection of previously existing datasets annotated with coreference, which we converted into a common annotation scheme. In total, CorefUD in its current version 1.2 consists of 25 datasets for 16 languages. The datasets are enriched with automatic morphological and syntactic annotations that are fully compliant with the standards of the Universal Dependencies project. All the datasets are stored in the CoNLL-U format, with coreference- and bridging-specific information captured by attribute-value pairs located in the MISC column. The collection is divided into a public edition and a non-public (ÚFAL-internal) edition. The publicly available edition is distributed via LINDAT-CLARIAH-CZ and contains 21 datasets for 15 languages (1 dataset for Ancient Greek, 1 for Ancient Hebrew, 1 for Catalan, 2 for Czech, 3 for English, 1 for French, 2 for German, 2 for Hungarian, 1 for Lithuanian, 2 for Norwegian, 1 for Old Church Slavonic, 1 for Polish, 1 for Russian, 1 for Spanish, and 1 for Turkish), excluding the test data. The non-public edition is available internally to ÚFAL members and contains additional 4 datasets for 2 languages (1 dataset for Dutch, and 3 for English), which we are not allowed to distribute due to their original license limitations. It also contains the test data portions for all datasets. When using any of the harmonized datasets, please get acquainted with its license (placed in the same directory as the data) and cite the original data resource, too. Compared to the previous version 1.1, the version 1.2 comprises new languages and corpora, namely Ancient_Greek-PROIEL, Ancient_Hebrew-PTNK, English-LitBank, and Old_Church_Slavonic-PROIEL. In addition, English-GUM and Turkish-ITCC have been updated to newer versions, conversion of zeros in Polish-PCC has been improved, and the conversion pipelines for multiple other datasets have been refined (a list of all changes in each dataset can be found in the corresponding README file).


## Citation
```
 @misc{11234/1-5478,
 title = {Coreference in Universal Dependencies 1.2 ({CorefUD} 1.2)},
 author = {Popel, Martin and Nov{\'a}k, Michal and {\v Z}abokrtsk{\'y}, Zden{\v e}k and Zeman, Daniel and Nedoluzhko, Anna and Acar, Kutay and Bamman, David and Bourgonje, Peter and Cinkov{\'a}, Silvie and Eckhoff, Hanne and Cebiro{\u g}lu Eryi{\u g}it, G{\"u}l{\c s}en and Haji{\v c}, Jan and Hardmeier, Christian and Haug, Dag and J{\o}rgensen, Tollef and K{\aa}sen, Andre and Krielke, Pauline and Landragin, Fr{\'e}d{\'e}ric and Lapshinova-Koltunski, Ekaterina and M{\ae}hlum, Petter and Mart{\'{\i}}, M. Ant{\`o}nia and Mikulov{\'a}, Marie and N{\o}klestad, Anders and Ogrodniczuk, Maciej and {\O}vrelid, Lilja and Pamay Arslan, Tu{\u g}ba and Recasens, Marta and Solberg, Per Erik and Stede, Manfred and Straka, Milan and Swanson, Daniel and Toldova, Svetlana and Vad{\'a}sz, No{\'e}mi and Velldal, Erik and Vincze, Veronika and Zeldes, Amir and {\v Z}itkus, Voldemaras},
 url = {http://hdl.handle.net/11234/1-5478},
 note = {{LINDAT}/{CLARIAH}-{CZ} digital library at the Institute of Formal and Applied Linguistics ({{\'U}FAL}), Faculty of Mathematics and Physics, Charles University},
 copyright = {Licence {CorefUD} v1.2},
 year = {2024} }
```