Query expansion through geographical feature types

Authors:
Nuno Cardoso;Mário J. Silva
Affiliations:
University of Lisbon: Faculty of Sciences, Lisbon, Portugal;University of Lisbon: Faculty of Sciences, Lisbon, Portugal
Venue:
Proceedings of the 4th ACM workshop on Geographical information retrieval
Year:
2007

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Abstract

This paper introduces a new approach for expansion of queries with geographical context. The proposed strategy is based on a query parser that captures geonames and spatial relationships, and maps geographical features and feature types into concepts of a geographical ontology. Different strategies for query expansion, according to the geographical restrictions given by the user, are compared. The proposed method allows a more versatile and focused expansion towards the geographical information need of the user.