Mono- and crosslingual retrieval experiments at the university of hildesheim

Authors:
René Hackl;Thomas Mandl;Christa Womser-Hacker
Affiliations:
Information Science, University of Hildesheim, Hildesheim, Germany;Information Science, University of Hildesheim, Hildesheim, Germany;Information Science, University of Hildesheim, Hildesheim, Germany
Venue:
CLEF'04 Proceedings of the 5th conference on Cross-Language Evaluation Forum: multilingual Information Access for Text, Speech and Images
Year:
2004

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Abstract

In this year's participation we continued to evaluate open source information retrieval software. We used mainly the Lucene system and experimented with some of the most effective optimization strategies applied in the past CLEF campaigns. The effectiveness of open source and other free tools can be greatly enhanced by employing these optimization strategies. For most languages, blind relevance feedback led to considerable improvement. On the other hand, indexing strategies with n-grams did not lead to any improvements in our experiments.