Using Geographic Signatures as Query and Document Scopes in Geographic IR

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.

• Type: Conference
• Year: 2007
• Where: CLEF
• Authors: Nuno Cardoso, David Cruz, Marcirio Silveira Chaves, Mário J. Silva
• Keywords: CLEF 2007, Geographic Features, Information Retrieval, Multiple Geographic Concepts, Text Mining Strategies