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This page pertains to UD version 2.

UD Czech PDT

Language: Czech (code: cs)
Family: Indo-European, Slavic

This treebank has been part of Universal Dependencies since the UD v1.0 release.

The following people have contributed to making this treebank part of UD: Daniel Zeman, Jan Hajič.

Repository: UD_Czech-PDT
Search this treebank on-line: PML-TQ
Download all treebanks: UD 2.14

License: CC BY-NC-SA 4.0

Genre: news, reviews, nonfiction

Questions, comments? General annotation questions (either Czech-specific or cross-linguistic) can be raised in the main UD issue tracker. You can report bugs in this treebank in the treebank-specific issue tracker on Github. If you want to collaborate, please contact [zeman (æt) ufal • mff • cuni • cz]. Development of the treebank happens outside the UD repository. If there are bugs, either the original data source or the conversion procedure must be fixed. Do not submit pull requests against the UD repository.

Annotation Source
Lemmas annotated manually in non-UD style, automatically converted to UD
UPOS annotated manually in non-UD style, automatically converted to UD
XPOS annotated manually
Features annotated manually in non-UD style, automatically converted to UD
Relations annotated manually in non-UD style, automatically converted to UD


The Czech-PDT UD treebank is based on the Prague Dependency Treebank – Consolidated 1.0 (PDT-C), created at the Charles University in Prague.

The treebank consists of 87,907 sentences (1.5 M tokens) and its domain is mainly newswire, reaching also to business and popular scientific articles from the 1990s. The treebank is licensed under the terms of CC BY-NC-SA 4.0 and its original (non-UD) version can be downloaded from http://hdl.handle.net/11234/1-3185.

The morphological and syntactic annotation of the Czech UD treebank is created through a conversion of PDT data. The conversion procedure has been designed by Dan Zeman and implemented in Treex.


We wish to thank all of the contributors to the original PDT annotation effort, including Eduard Bejček, Eva Hajičová, Jan Hajič, Pavlína Jínová, Václava Kettnerová, Veronika Kolářová, Marie Mikulová, Jiří Mírovský, Anna Nedoluzhko, Jarmila Panevová, Lucie Poláková, Magda Ševčíková, Jan Štěpánek, and Šárka Zikánová.


Statistics of UD Czech PDT

POS Tags






Tokenization and Word Segmentation



Nominal Features

Degree and Polarity

Verbal Features

Pronouns, Determiners, Quantifiers

Other Features


Auxiliary Verbs and Copula

Core Arguments, Oblique Arguments and Adjuncts

Here we consider only relations between verbs (parent) and nouns or pronouns (child).

Reflexive Verbs

Reflexive Passive

Verbs with Reflexive Core Objects

Relations Overview