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# Summary
Czech-PCEDT is based on the Czech part of Prague Czech-English Dependency
Treebank 2.0 Coref created at the Charles University, Prague. The texts
are manual translations of the texts from the Wall Street Joural section
of Penn Treebank.
## References
```
@inproceedings{pcedt2.0coref,
author = {Nedoluzhko, Anna and Nov{\'a}k, Michal and Cinkov{\'a}, Silvie and Mikulov{\'a}, Marie and M{\'\i}rovsk{\'y}, Ji{\v{r}}{\'\i}},
title = {Coreference in {P}rague {C}zech-{E}nglish {D}ependency {T}reebank},
booktitle = {Proceedings of the Tenth International Conference on Language Resources and Evaluation ({LREC}'16)},
publisher = {European Language Resources Association (ELRA)},
address = {Portoro{\v{z}}, Slovenia},
year = {2016},
pages = {169--176},
}
```
# Changelog
### 2024-03-28 v1.2
* the morpho-syntactic features are no longer converted from the PCEDT a-layer (which has been automatically parsed by an outdated method),
but parsed by UDPipe 2 using the `czech-pdt-ud-2.12-230717` model
* Coreference annotation: If a bracket is in mention span, the paired bracket is added too, if possible.
* Added the enhanced relation subtype nsubj:xsubj.
* More restrictive use of orphans and empty nodes: Not in non-verbal coordinated sentences.
### 2023-02-24 v1.1
* Removed superfluous empty nodes #Rcp, #Cor, #QCor.
* Removed empty nodes depending on the artificial 0:root.
* "Bych/bys/by/bychom/byste" in MWTs no longer breaks mention spans.
* Improved guessing of pronominal forms for empty nodes.
* Functors added also to non-empty nodes.
### 2022-04-06 v1.0
* new format of coreference and anaphora annotations
* harmonization of train/dev/test split for corpora containing WSJ documents
* Improved conversion from the Prague format, reduced number of discontinuous mentions.
* Case-enhanced dependency relations made more consistent.
### 2021-12-10 v0.2
* Fixed attachment of punctuation where required by the UD guidelines.
### 2021-03-11 v0.1
* initial conversion
```
=== Machine-readable metadata (DO NOT REMOVE!) ================================
Data available since: CorefUD 0.1
License: CC BY-NC-SA 3.0
Includes text: yes
Genre: news
Lemmas: automatic
UPOS: automatic
XPOS: automatic
Features: automatic
Relations: automatic
CorefUD contributors: Nedoluzhko, Anna (1); Novák, Michal (1); Cinková, Silvie (1); Mikulová, Marie (1); Zeman, Daniel (1)
Other contributors: Mírovský, Jiří (1)
Contributors' affiliations: (1) Charles University, Faculty of Mathematics and Physics, Institute of Formal and Applied Linguistics, Prague, Czechia
Contributing: elsewhere
Contact: [email protected]
===============================================================================
```
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