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https://issues.apache.org/jira/browse/SOLR-10217?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17019424#comment-17019424
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Jan Høydahl commented on SOLR-10217:
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Coming back to this. The use case we had was news articles. So you'd like to
compare a foreground set of last week content to some background set of, say
last month content instead of whole corpus. You may also want to limit the
background set to articles from one newspaper or a set of papers only.
> Add a query for the background set to the significantTerms streaming
> expression
> -------------------------------------------------------------------------------
>
> Key: SOLR-10217
> URL: https://issues.apache.org/jira/browse/SOLR-10217
> Project: Solr
> Issue Type: New Feature
> Reporter: Gethin James
> Assignee: Joel Bernstein
> Priority: Major
> Attachments: SOLR-10217.patch, SOLR-10217.patch, SOLR-20217.patch
>
>
> Following the work on SOLR-10156 we now have a significantTerms expression.
> Currently, the background set is always the full index. It would be great if
> we could use a query to define the background set.
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