Participation de l'IRISA à DeFT2012 : recherche d'information et apprentissage pour la génération de mots-clés (IRISA participation to DeFT2012: information retrieval and machine-learning for keyword generation) [in French]

IRISA participation to DeFT 2012 : information retrieval and machine learning for keyword generation This paper describes the IRISA participation to the DeFT 2012 text-mining challenge. It consisted in the automatic attribution or generation of keywords to scientific journal articles. Two tasks were proposed which led us to test two different strategies. For the first task, a list of keywords was provided. Based on that, our first strategy is to consider that as an Information Retrieval problem in wich the keyword are the queries, which are attributed to the best ranked documents. This approach yielded very good results. For the second task, only the articles were known; for this task, our approach is chiefly based on a term extraction system whose results are reordered by machine learning. MOTS-CLÉS : Génération de mots-clés, Extraction de termes, Recherche d’information, Boosting, arbres de décision, TermoStat.