Integrating cliques as query context into information retrieval model

Query is an important element that provides a specification of the users´ information need. Many Studies have found contexts within query that strongly influence the interpretation of a query. In this paper, we propose to use cliques as query context which refers to context words within the query. This approach refers to cliques as query context which is particularly useful for the selection of relevant term relations to avoid topic drift. Our experiments on several collections show that the new approach bring significant improvements and more effective on collections.