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Posted to dev@lucene.apache.org by "Yuki Yano (JIRA)" <ji...@apache.org> on 2017/08/31 05:59:00 UTC
[jira] [Commented] (SOLR-10811) Speed up MultipleAdditiveTreesModel
by using QuickScorer algorithm
[ https://issues.apache.org/jira/browse/SOLR-10811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16148490#comment-16148490 ]
Yuki Yano commented on SOLR-10811:
----------------------------------
I revised the patch based on the master branch.
> Speed up MultipleAdditiveTreesModel by using QuickScorer algorithm
> ------------------------------------------------------------------
>
> Key: SOLR-10811
> URL: https://issues.apache.org/jira/browse/SOLR-10811
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: contrib - LTR
> Reporter: Yuki Yano
> Priority: Minor
> Attachments: quickscorer_model.pdf, SOLR-10811_master.patch, SOLR-10811.patch
>
>
> 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.
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