Using syntactic dependency - pairs con ationto improve retrieval performance in Spanish ?

This article presents two new approaches for term indexing which are particularly appropriate for languages with a rich lexis and morphology, such as Spanish, and need few resources to be applied. At word level, productive derivational morphology is used to connate semantically related words. At sentence level, an approximate grammar is used to connate syntactic and morphosyntactic variants of a given multi-word term into a common base form. Experimental results show remarkable improvements with regard to classical indexing methods.