Terrier Core

Implement Multinomial Field-based DFR Model

Details

  • Type: New Feature New Feature
  • Status: Resolved Resolved
  • Priority: Minor Minor
  • Resolution: Fixed
  • Affects Version/s: 3.0
  • Fix Version/s: 3.0
  • Component/s: .matching
  • Description:
    See Vassilis' ECIR 2007 paper

Activity

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Craig Macdonald added a comment - 16/Oct/09 10:38 AM

Paper is at http://ir.dcs.gla.ac.uk/terrier/publications/fulltext_plachouras.pdf

Vassilis discussed two approximations of the multinomial model, which were called ML2 and ML_{D}2. The latter of these used Lancos approximation instead of using Stirling series to calcualte the factorials in ML2.

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Craig Macdonald added a comment - 16/Oct/09 10:38 AM Paper is at http://ir.dcs.gla.ac.uk/terrier/publications/fulltext_plachouras.pdf Vassilis discussed two approximations of the multinomial model, which were called ML2 and ML_{D}2. The latter of these used Lancos approximation instead of using Stirling series to calcualte the factorials in ML2.
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Craig Macdonald added a comment - 25/Feb/10 5:08 PM

Ok. I have recoded to work in new version of fields. These will be committed to core in TREC-160.

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Craig Macdonald added a comment - 25/Feb/10 5:08 PM Ok. I have recoded to work in new version of fields. These will be committed to core in TREC-160.

People

Dates

  • Created:
    16/Oct/09 10:35 AM
    Updated:
    05/Mar/10 5:12 PM
    Resolved:
    25/Feb/10 5:08 PM
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