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From "Tommaso Teofili (JIRA)" <>
Subject [jira] [Updated] (SOLR-5827) Add boosting functionality to MoreLikeThisHandler
Date Tue, 11 Mar 2014 10:37:44 GMT


Tommaso Teofili updated SOLR-5827:

    Attachment: SOLR-5827.1.patch

attached a new patch (based on trunk) which slightly improves the first one from Upayavira
by moving the parameter to MoreLikeThisParams, using this feature in the MoreLikeThisHandlerTest
and introduces a new constructor instead of changing the current one (which gets deprecated).

> Add boosting functionality to MoreLikeThisHandler
> -------------------------------------------------
>                 Key: SOLR-5827
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: MoreLikeThis
>            Reporter: Upayavira
>            Assignee: Tommaso Teofili
>             Fix For: 4.8
>         Attachments: SOLR-5827.1.patch, SOLR-5827.patch, SOLR-5827.patch
> The MoreLikeThisHandler facilitates the creation of a very simple yet powerful recommendation
> It is possible to constrain the result set using filter queries. However, it isn't possible
to influence the scoring using function queries. Adding function query boosting would allow
for including such things as recency in the relevancy calculations.
> Unfortunately, the boost= parameter is already in use, meaning we cannot replicate the
edismax boost/bf for additive/multiplicative boostings.
> My patch only touches the MoreLikeThisHandler, so the only really contentious thing is
to decide the parameters to configure it.
> I have a prototype working, and will upload a patch shortly. 

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