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