Publication at Faculty of Mathematics and Physics |
2009
Abstract
In this paper we describe retrieval experiments performed at Charles University in Prague for participation in the CLEF 2007 Ad-Hoc track. We focused on the Czech monolingual task and used the LEMUR toolkit as the retrieval system.
Our results demonstrate that for Czech as a highly inflectional language, lemmatization significantly improves retrieval results and manually created queries are only slightly better than queries automatically generated from topic specifications.