Reformulation de Requêtes par Structure en RI dans les documents structurés

Relevance Feedback (RF) is a technique allowing to enrich an initial query according to the user feedback. The goal is to express more precisily the user’s needs. Some open issues appear when considering semi-structured documents like XML. Most of the existing RF approaches are applied in the content of elements. We prpose a new approach that is able to extend the initial query by adding a generative structure and keywords. This approach is applied to both structured and un-structured queries. Experiments are carried out with INEX campaign and results show the interest of our method for some query types. MOTS-CLÉS : reformulation, document XML, structure générique, contenu, RI.