[
https://issues.apache.org/jira/browse/SOLR-6354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Hoss Man resolved SOLR-6354.
----------------------------
Resolution: Fixed
Fix Version/s: Trunk
5.0
Assignee: Hoss Man
> Support stats over functions
> ----------------------------
>
> Key: SOLR-6354
> URL: https://issues.apache.org/jira/browse/SOLR-6354
> Project: Solr
> Issue Type: Sub-task
> Reporter: Hoss Man
> Assignee: Hoss Man
> Fix For: 5.0, Trunk
>
> Attachments: SOLR-6354.patch, SOLR-6354.patch, SOLR-6354.patch,
> TstStatsComponent.java
>
>
> The majority of the logic in StatsValuesFactory for dealing with stats over
> fields just uses the ValueSource API. There's very little reason we can't
> generalize this to support computing aggregate stats over any arbitrary
> function (or the scores from an arbitrary query).
> Example...
> {noformat}
> stats.field={!func key=mean_rating
> mean=true}prod(user_rating,pow(editor_rating,2))
> {noformat}
> ...would mean that we can compute a conceptual "rating" for each doc by
> multiplying the user_rating field by the square of the editor_rating field,
> and then we'd compute the mean of that "rating" across all docs in the set
> and return it as "mean_rating"
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
