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https://issues.apache.org/jira/browse/SOLR-17736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18046704#comment-18046704
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Chris M. Hostetter commented on SOLR-17736:
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{quote}Feel free to create another Jira, for the support of multi parent
prefilters.
I'll be happy to address it later on next year, or anybody can contribute it
before that.
{quote}
yup yup: SOLR-18039
> Introduce support for KNN search on nested vector documents
> -----------------------------------------------------------
>
> Key: SOLR-17736
> URL: https://issues.apache.org/jira/browse/SOLR-17736
> Project: Solr
> Issue Type: New Feature
> Components: vector-search
> Affects Versions: 9.8
> Reporter: Alessandro Benedetti
> Priority: Major
> Labels: pull-request-available
> Attachments: SOLR-17736.patch
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> This issue tracks the work of introducing the support for KNN search on
> nested vector documents, surfacing the Lucene implementation in here:
> https://github.com/apache/lucene/pull/12434
> This allows both:
> -KNN retrieval of children, applying parent filters with no denormalisation
> needed
> -KNN retrieval of parents (based on children KNN, children level prefiltering
> and parent level prefiltering)
> It's one way of having multi-valued vectors per field, per document in Solr.
> More will come soon
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