Using Geographic Signatures as Query and Document Scopes in Geographic IR

Authors:
Nuno Cardoso;David Cruz;Marcirio Chaves;Mário J. Silva
Affiliations:
Faculty of Sciences, University of Lisbon, Lasige, ;Faculty of Sciences, University of Lisbon, Lasige, ;Faculty of Sciences, University of Lisbon, Lasige, ;Faculty of Sciences, University of Lisbon, Lasige,
Venue:
Advances in Multilingual and Multimodal Information Retrieval
Year:
2008

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Abstract

This paper reports the participation of the University of Lisbon at the 2007 GeoCLEF task. We adopted a novel approach for GIR, focused on handling geographic features and feature types on both queries and documents, generating signatures with multiple geographic concepts as a scope of interest. We experimented new query expansion and text mining strategies, relevance feedback approaches and ranking metrics.