SINAI at Robust WSD Task @ CLEF 2008: When WSD is a good idea for Information Retrieval tasks?

This year we have participated in the first edition of Robust WSD task with the aim of investigating the performance of disambiguation tools applied to Information Retrieval (IR). The main interest of our experimentation is the characterization of queries where WSD is a useful tool. That is, which issues must be fulfilled by a query in order to apply an state-of-art WSD tool? After the interpretation of our experiments, we think that only queries with terms very polysemous and very high IDF value are improved by using WSD