Judging the spatial relevance of documents for GIR

Authors:
Paul D. Clough;Hideo Joho;Ross Purves
Affiliations:
Department of Information Studies, University of Sheffield, UK;Department of Computer Science, University of Glasgow, UK;Department of Geography, University of Zurich, Switzerland
Venue:
ECIR'06 Proceedings of the 28th European conference on Advances in Information Retrieval
Year:
2006

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Abstract

Geographic Information Retrieval (GIR) is concerned with the retrieval of documents based on both thematic and geographic content. An important issue in GIR, as for all IR, is relevance. In this paper we argue that spatial relevance should be considered independently from thematic relevance, and propose an initial scheme. A pilot study to assess this relevance scheme is presented, with initial results suggesting that users can distinguish between these two relevance dimensions, and that furthermore they have different properties. We suggest that spatial relevance requires greater assessor effort and more localised geographic knowledge than judging thematic relevance.