Intérêt des ressources morphologiques pour la recherche d'information précise

This paper presents how to build a reliable morphological knowledge base, by mean of an automatic generation, the filtering of the obtained words and their validation. The generated base concerns verbs and their agents. The validation method relies on different resources and corpora in order to verify that a verb and a noun belong to the same family, and are related by an agent link. The method can be generalized to other kinds of resources. We will also show in what extend using such morphological resources is useful for selecting passages in a question answering system. MOTS-CLÉS : ressources morphologiques, validation de ressource, système de question-réponse