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  1. Terrier Core
  2. TR-68

Implement Multinomial Field-based DFR Model

    Details

    • Type: New Feature
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 3.0
    • Fix Version/s: 3.0
    • Component/s: .matching
    • Labels:
      None

      Description

      See Vassilis' ECIR 2007 paper

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          Hide
          craigm Craig Macdonald added a comment -

          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.

          Show
          craigm Craig Macdonald added a comment - 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.
          Hide
          craigm Craig Macdonald added a comment -

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

          Show
          craigm Craig Macdonald added a comment - Ok. I have recoded to work in new version of fields. These will be committed to core in TREC-160 .

            People

            • Assignee:
              craigm Craig Macdonald
              Reporter:
              craigm Craig Macdonald
            • Watchers:
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              Dates

              • Created:
                Updated:
                Resolved: