# 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the morpho-syntactic features are no longer converted from the PCEDT a-layer (which has been automatically parsed by an outdated method),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: nedoluzko@ufal.mff.cuni.cz
===============================================================================
```