COLE experiments in the CLEF 2002 Spanish monolingual track

Abstract

In this our first participation in CLEF, we applied Natural Language Processing techniques for single word and multiword term conflation. We tested several approaches at different levels of text processing in our experiments: first, we lemmatized the text to avoid inflectional variation; second, we expanded the queries through synonyms according to a fixed similarity threshold; third, we employed morphological families to deal with derivational variation; and fourth, we tested a mixed approach based on the employment of such families together with syntactic dependencies to deal with the syntactic content of the document. © Springer-Verlag Berlin Heidelberg 2003.