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Field-Weighted XML Retrieval Based on BM25.

Lu, W., Robertson, S. E. & MacFarlane, A. (2005). Field-Weighted XML Retrieval Based on BM25.. Paper presented at the 4th International Workshop of the Initiative for the Evaluation of XML Retrieval, 28-11-2005 - 30-11-2005, Dagstuhl Castle, Germany,. doi: 10.1007/11766278_12


This is the first year for the Centre for Interactive Systems Research participation of INEX. Based on a newly developed XML indexing and retrieval system on Okapi, we extend Robertson’s field-weighted BM25F for document retrieval to element level retrieval function BM25E. In this paper, we introduce this new function and our experimental method in detail, and then show how we tuned weights for our selected fields by using INEX 2004 topics and assessments. Based on the tuned models we submitted our runs for CO.Thorough, CO.FetchBrowse, the methods we propose show real promise. Existing problems and future work are also discussed.

Publication Type: Conference or Workshop Item (Paper)
Additional Information: The final publication is available at Springer via
Subjects: Z Bibliography. Library Science. Information Resources > Z665 Library Science. Information Science
Departments: School of Science & Technology > Computer Science > Human Computer Interaction Design
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