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Abstract

The Geographic Information Retrieval (GIR) community has generally accepted the thesis that both thematic and geographic aspects of documents are useful for GIR. This paper describes an experiment exploring this thesis by separately indexing and searching geographical relevant-terms (place names, geo-spatial relations, geographic concepts and geographic adjectives). Two indexes were created – one for extracted geographic relevant-terms (footprint document) and one for reference document collections. Footprint and reference document scores are combined by a linear interpolation to obtain an overall score for document relevance ranking. Experimentation with geographic query expansion provided no significant improvement though it stabilized the query result.

Keywords

Similarity Score Query Result Query Expansion Reference Document Geographic Reference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Gey, F., Larson, R., Sanderson, M., Joho, H., Clough, P., Vivien,: GeoCLEF: the CLEF 2005 Cross-Language Geographic Information Retrieval Track Overview. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  2. 2.
    Gey, F., Larson, R., Sanderson, M., Bischoff, K., Mandl, T., Womser-Hacker, C., Santa, D., Rocha, P.: GeoCLEF 2006: the CLEF 2006 Cross-Language Geographic Information Retrieval Track Overview. In: Working Notes for CLEF 2006 Workshop, Alicante, Spain (2006)Google Scholar
  3. 3.
    Gey, F., Petras, V.: Berkeley2 at GeoCLEF: Cross-Language Geographic Information Retrieval of German and English Documents. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  4. 4.
    Larson, R.R.: Cheshire II at GeoCLEF: Fusion and Query Expansion for GIR. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  5. 5.
    Kornai, A.: MetaCarta at GeoCLEF 2005. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  6. 6.
    Hughes, B.: NICTA i2d2 at GeoCLEF 2005. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)Google Scholar
  7. 7.
    Buscaldi, D., Rosso, P., Arnal, E.S.: A WordNet-based Query Expansion method for Geographical Information Retrieval. In: Peters, C., Gey, F.C., Gonzalo, J., Müller, H., Jones, G.J.F., Kluck, M., Magnini, B., de Rijke, M., Giampiccolo, D. (eds.) CLEF 2005. LNCS, vol. 4022, Springer, Heidelberg (2006)CrossRefGoogle Scholar
  8. 8.
    Gospodnetic, O., Hatcher, E.: Lucene in Action. Manning (2005)Google Scholar
  9. 9.
    Martins, B., Cardoso, N., Chaves, M.S., Andrade, L., Silva, M.J.: The University of Lisbon at GeoCLEF 2006. In: Working Notes for CLEF 2006 Workshop, Alicante, Spain (2006)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Andogah Geoffrey
    • 1
  1. 1.Computational Linguistics Group, Centre for Language and Cognition Groningen (CLCG), University of Groningen, Groningen, Email: annageof@yahoo.comThe Netherlands

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