Toponym disambiguation using ontology-based semantic similarity

Authors:
David S. Batista;João D. Ferreira;Francisco M. Couto;Mário J. Silva
Affiliations:
IST/INESC-ID Lisbon, Lisbon, Portugal;LaSIGE, University of Lisbon, Lisbon, Portugal;LaSIGE, University of Lisbon, Lisbon, Portugal;IST/INESC-ID Lisbon, Lisbon, Portugal
Venue:
PROPOR'12 Proceedings of the 10th international conference on Computational Processing of the Portuguese Language
Year:
2012

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Abstract

We propose a new heuristic for toponym sense disambiguation, to be used when mapping toponyms in text to ontology concepts, using techniques based on semantic similarity measures. We evaluated the proposed approach using a collection of Portuguese news articles from which the geographic entity names were extracted and then manually mapped to concepts in a geospatial ontology covering the territory of Portugal. The results suggest that using semantic similarity to disambiguate toponyms in text produces good results, in comparison with a baseline method.