[jira] Commented: (SOLR-349) boost query by a function of other fields

["Yonik Seeley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12525935 ] 

Yonik Seeley commented on SOLR-349:
-----------------------------------

This issue is more for a top-down approach (less concerned with underlying implementation, more with just making it possible via http get).

- We need ways to add multiple fields together, multiply fields together, etc.

- We need a scaling function... for example, the range of all the components may not be known, but one may want the final value to be between 1 and 2.  For something like this to be done efficiently, it seems like a min and max would be needed on ValueSource?  Barring that, this value source would need to iterate over *all* documents and scale appropriately.  Perhaps do the latter for the first implementation and we could always optimize later?

> boost query by a function of other fields
> -----------------------------------------
>
>                 Key: SOLR-349
>                 URL: https://issues.apache.org/jira/browse/SOLR-349
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Yonik Seeley
>
> User should be able to boost a query by a function of other fields
> Some background: http://www.nabble.com/boosting-a-query-by-a-function-of-other-fields-tf4387856.html#a12510092

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