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Blind Relevance Feedback and Named Entity Based Query Expansion for Geographic Retrieval at GeoCLEF 2006

  • Kerstin Bischoff
  • Thomas Mandl
  • Christa Womser-Hacker
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4730)

Abstract

In its participation at GeoCLEF 2006, the University of Hildesheim focused on the monolingual German and English and the bilingual German ←→ English tasks. Based on the results of GeoCLEF 2005, the weighting of and the expansion with geographic named entities (NE) within a Boolean retrieval approach was examined. Because the best results 2005 were achieved with Blind Relevance Feedback (BRF) in which NEs seemed to play a crucial role, the effects of adding particular geographic NEs within the BRF are explored. The paper presents a description of the system design, the submitted runs and results. A first analysis of unofficial post experiments indicates that geographic NEs can improve BRF and supports prior findings that the geographical expansion within a Boolean retrieval approach does not necessarily lead to better results – as it is often assumed. The discussion is followed by planned future research activies.

Keywords

Geographic Information System Query Expansion Name Entity Recognition Original Query Name Entity 
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.
    Amitay, E., Har’El, N., Sivan, R., Soffer, A.: Web-a-Where: Geotagging Web content. In: Proc. 27th Annual Intl ACM SIGIR Conf. 2004, Sheffield, UK, pp. 273–280. ACM, New York (2004)Google Scholar
  2. 2.
    Chaves, M., Martins, B., Silva, M.: Challenges and Resources for Evaluating Geographical IR. In: Proc 2nd Intl Workshop on Geographic Information Retrieval, CKIM 2005, Bremen, Germany, pp. 65–69 (2005)Google Scholar
  3. 3.
    Clough, P.: Extracting Metadata for Spatially-Aware Information Retrieval on the Internet. In: Proc 2nd Intl Workshop on Geographic Information Retrieval, CKIM 2005, Bremen, Germany, pp. 25–30 (2005)Google Scholar
  4. 4.
    Purves, R., Clough, P., Joho, H.: Identifying imprecise regions for geographic information retrieval using the web. In: Proc GIS Research UK 13th Annual Conference, Glasgow, UK, pp. 313–318 (2005)Google Scholar
  5. 5.
    Ferrés, D., Ageno, A., Rodríguez, H.: The GeoTALP-IR System at GeoCLEF-2005: Experiments Using a QA-based IR System, Linguistic Analysis, and a Geographical Thesaurus. In: Working Notes 6th Workshop Cross-Language Evaluation Forum, CLEF, Vienna (2005)Google Scholar
  6. 6.
    Gey, F., Larson, R., Sanderson, M., Joho, H., Clough, P.: GeoCLEF: the CLEF 2005 Cross-Language Geographic Information Retrieval Track. In: Working Notes of the 6th Workshop of the Cross-Language Evaluation Forum, CLEF, Vienna, Austria, September 2005 (2005)Google Scholar
  7. 7.
    Gey, F., Petras, V.: Berkeley2 at GeoCLEF: Cross-Language Geographic Information Retrieval of German and English Documents. In: Working Notes 6th Workshop of the Cross-Language Evaluation Forum, CLEF, Vienna (2005)Google Scholar
  8. 8.
    Hackl, R., Mandl, T., Womser-Hacker, C.: Mono- and Cross-lingual Retrieval Experiments at the University of Hildesheim. In: Peters, C., Clough, P.D., Gonzalo, J., Jones, G.J.F., Kluck, M., Magnini, B. (eds.) CLEF 2004. LNCS, vol. 3491, pp. 165–169. Springer, Heidelberg (2005)Google Scholar
  9. 9.
    Larson, R.: Chesire II at GeoCLEF: Fusion and Query Expansion for GIR. In: Working Notes 6th Workshop of the Cross-Language Evaluation Forum, Vienna (2005)Google Scholar
  10. 10.
    Mandl, T., Schneider, R., Strötgen, R.: A Fast Forward Approach to Cross-lingual Question Answering for English and German. 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, pp. 332–336. Springer, Heidelberg (2006)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Kerstin Bischoff
    • 1
  • Thomas Mandl
    • 1
  • Christa Womser-Hacker
    • 1
  1. 1.University of Hildesheim, Information Science, Marienburger Platz 22, D-31141 HildesheimGermany

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