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From "Upayavira (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-5827) Add boosting functionality to MoreLikeThisHandler
Date Mon, 10 Mar 2014 22:27:45 GMT

    [ https://issues.apache.org/jira/browse/SOLR-5827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13926345#comment-13926345
] 

Upayavira commented on SOLR-5827:
---------------------------------

We could add a new method that takes a SolrQueryRequest, and leave the old one behind. If
we added a null check on req, then the existing method would work, but just wouldn't be able
to use function queries in parsing queries (as is the case now). In that case, it could just
throw an exception, saying that the request must be passed in in that use case


> Add boosting functionality to MoreLikeThisHandler
> -------------------------------------------------
>
>                 Key: SOLR-5827
>                 URL: https://issues.apache.org/jira/browse/SOLR-5827
>             Project: Solr
>          Issue Type: Improvement
>          Components: MoreLikeThis
>            Reporter: Upayavira
>            Assignee: Tommaso Teofili
>             Fix For: 4.8
>
>         Attachments: SOLR-5827.patch, SOLR-5827.patch
>
>
> The MoreLikeThisHandler facilitates the creation of a very simple yet powerful recommendation
engine. 
> 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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