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Institute of Formal and Applied Linguistics

at Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic





The Valency Lexicon of Czech Verbs with Complex Syntactic-Semantic Annotation

The main goal of the project is to create consistent electronic dictionary rendering underlying structure of Czech verbs and additional syntactico-semantic information useful for the analysis and synthesis of Czech texts as well as other applied tasks in NLP.

The Valency Lexicon of Czech Verbs is a collection of linguistically annotated data and documentation, resulting from an attempt at formal description of valency frames of Czech verbs.

The lexicon provides:

The lexicon is available in three formats:

VALLEX 2.5

VALLEX 2.5 can be found here.

VALLEX 2.5 is a cleaned and corrected successor of VALLEX 2.0. It was released electronically at the end of 2007 and since spring 2008 it is available also as a book issued by Karolinum Press, the publishing house of Charles University in Prague.

VALLEX 2.0

VALLEX 2.0 can be found here.

In VALLEX 2.0, there are roughly 2,730 lexeme entries containing together around 6,460 lexical units ("senses"). VALLEX 2.0 - unlike traditional dictionaries and also unlike VALLEX 1.0 - treats a pair of perfective and imperfective aspectual counterparts as a single lexeme (if perfective and imperfective verbs would be counted separately, the size of VALLEX 2.0 would virtually grow to 4,250 verb entries).

VALLEX 1.0

VALLEX 1.0 can be found here.

VALLEX 1.0 contains roughly 1400 verbs (counting only perfective and imperfective verbs, but not their iterative counterparts) - 1000 most frequent Czech verbs were selected according to their number of occurrences in a part of the Czech National Corpus (only 'být' (to be) was excluded); then their perfective or imperfective aspectual counterparts were added, if they were missing.

VALLEX, both version 1.0 and 2.0, can be used free of charge by any academic, educational or research institution, or other organization or individual making use of VALLEX for non-commercial research and/or education purposes. Legal usage of VALLEX is conditioned by filling the registration form.

Contact:  Markéta Lopatková

Content: Markéta Lopatková, Design & Functionality: Martin Cetkovský, ÚFAL 2006
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