Documents Search Using Semantics Criteria
Santiago Cotelo, Alejandro Makowski, Luis Chiruzzo, Dina Wonsever · 2014
Current Information Retrieval systems generally search documents using a keywords model, which is often not expressive enough for the user. In this paper we describe some directions for improving an Information Retrieval system by letting the user specify different semantics constraints in her query, using a language based on a simplified version of first-order logic. The user can write queries that express the association between objects and attributes, temporal constraints and negation of attributes, and also perform synonyms expansion of queries. In order to evaluate the relevance of a candidate document with respect to the query, the dependency parse tree of the document is used, as well as other linguistic resources. The system was evaluated using a set of queries and a corpus extracted from the British newspaper The Times. The results are compared against the newspaper's own search engine and they look promising, showing an important improvement in precision in the first documents returned by the query.