Using WordNet for Concept-Based Document Indexing in Information Retrieval
Fatiha Boubekeur, Mouloud Mammeri, Mohand Boughanem, Lynda Tamine, Mariam Daoud Irit-Sig, Paul Sabatier · 2010
Concept-based document indexing deals with representing documents by means of semantic entities, the concepts, rather than lexical entities, the keywords. In this paper we propose an approach for concept-based document representation and weighting. Particularly, we propose (1) an approach for concept-identification (2) and a novel concept weighting scheme. The concepts are first extracted from WordNet and then weighted by means of a new measure of their importance in the document. Our conceptual indexing approach outperforms better than classical keyword-based approaches, and preliminary tests with the weighting scheme give better results than the classical tf-idf approach. Keywords-Information retrieval; conceptual indexing; concept weighting; WordNet. I. INTRODUCTION