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From "Yuki Yano (JIRA)" <>
Subject [jira] [Commented] (SOLR-10811) Speed up MultipleAdditiveTreesModel by using QuickScorer algorithm
Date Mon, 02 Oct 2017 08:17:00 GMT


Yuki Yano commented on SOLR-10811:

Thank you for letting me know the patent of QuickScorer!
I'll keep paying attention to a progress of the patent.

> Speed up MultipleAdditiveTreesModel by using QuickScorer algorithm
> ------------------------------------------------------------------
>                 Key: SOLR-10811
>                 URL:
>             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:
> 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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