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Selected Works of R. Manmatha
Unpublished Paper
A Critical Examination of TDT’s Cost Function
(2002)
  • R. Manmatha, University of Massachusetts - Amherst
  • Ao Feng
  • James Allan
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Abstract

Topic Detection and Tracking (TDT) tasks are evaluated using a cost function. The standard TDT cost function assumes a constant probability of relevance P(rel) across all topics. In practice, P(rel) varies widely across topics. We argue using both theoretical and experimental evidence that the cost function should be modified to account for the varying P(rel).

Keywords
  • Information Filtering,
  • Modeling score distributions,
  • Topic Detection and Tracking,
  • threshold,
  • normalization
Disciplines
Publication Date
2002
Comments
This is the pre-published version harvested from CIIR.
Citation Information
R. Manmatha, Ao Feng and James Allan. "A Critical Examination of TDT’s Cost Function" (2002)
Available at: http://works.bepress.com/r_manmatha/4/