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  1. Solr
  2. SOLR-10811

Speed up MultipleAdditiveTreesModel by using QuickScorer algorithm

    Details

    • Type: Improvement
    • Status: Open
    • Priority: Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: contrib - LTR
    • Security Level: Public (Default Security Level. Issues are Public)
    • Labels:
      None

      Description

      QuickScorer is an algorithm which can calculate multiple additive trees fast by using bitvectors for detecting target leaves.
      It was first published in SIGIR 2015 and won the best paper award of the conference.
      refs: http://zola.di.unipi.it/rossano/wp-content/papercite-data/pdf/sigir15.pdf

      We implemented QuickScorer as one of LTRScoringModel.
      This model uses same configuration of MultipleAdditiveTreesModel, thus it is easy to replace the model.
      Our experiments show our model can calculate scores about twice faster than MultipleAdditiveTreesModel.

      1. quickscorer_model.pdf
        457 kB
        Yuki Yano
      2. SOLR-10811_master.patch
        53 kB
        Yuki Yano
      3. SOLR-10811.patch
        53 kB
        Yuki Yano

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          Activity

          Hide
          yuyano Yuki Yano added a comment -

          Brief explanation about QuickScorer and our implementation.

          Show
          yuyano Yuki Yano added a comment - Brief explanation about QuickScorer and our implementation.
          Hide
          yuyano Yuki Yano added a comment -

          I revised the patch based on the master branch.

          Show
          yuyano Yuki Yano added a comment - I revised the patch based on the master branch.

            People

            • Assignee:
              Unassigned
              Reporter:
              yuyano Yuki Yano
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              Dates

              • Created:
                Updated:

                Development