Combining compositionality and pagerank for the identification of semantic relations between biomedical words

Authors:
Thierry Hamon;Christopher Engström;Mounira Manser;Zina Badji;Natalia Grabar;Sergei Silvestrov
Affiliations:
Université Paris, France;Mälardalen University, Västerås, Sweden;Université Paris, France;Universiteá Lille, Villeneuve d'Ascq, France;Universiteá Lille, Villeneuve d'Ascq, France;Mälardalen University, Västerås, Sweden
Venue:
BioNLP '12 Proceedings of the 2012 Workshop on Biomedical Natural Language Processing
Year:
2012

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Abstract

The acquisition of semantic resources and relations is an important task for several applications, such as query expansion, information retrieval and extraction, machine translation. However, their validity should also be computed and indicated, especially for automatic systems and applications. We exploit the compositionality based methods for the acquisition of synonymy relations and of indicators of these synonyms. We then apply pagerank-derived algorithm to the obtained semantic graph in order to filter out the acquired synonyms. Evaluation performed with two independent experts indicates that the quality of synonyms is systematically improved by 10 to 15% after their filtering.