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https://issues.apache.org/jira/browse/SOLR-18074?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18052031#comment-18052031
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Alessandro Benedetti commented on SOLR-18074:
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[~hossman] for your visibility
> MultiValued dense vectors support (through inner nested vectors)
> ----------------------------------------------------------------
>
> Key: SOLR-18074
> URL: https://issues.apache.org/jira/browse/SOLR-18074
> Project: Solr
> Issue Type: New Feature
> Components: vector-search
> Affects Versions: 10.0
> Reporter: Alessandro Benedetti
> Assignee: Alessandro Benedetti
> Priority: Major
>
> Scope of this issue is to give an additional way to users to handle documents
> with multiple vectors.
> This is already possible through block join nested vectors and it requires to
> model the information with nested documents (see
> [https://solr.apache.org/guide/solr/latest/indexing-guide/indexing-nested-documents.html])
> This issue adds the possibility of handling multi valued vectors directly as
> multi-valued fields (useful when the nested document has no other field than
> the vector).
> This contribution ease the indexing process hiding the complexity of knowing
> that behind the scene, there are nested documents (different context but
> similar approach to partial updates - that hide fetch, update and re-index).
> The contribution introduces support both at indexing and query time:
> At indexing time the user can index multi valued vectors as they would do for
> any other multi valued fields.
> At query time, the child transformer allow to return in the results the
> original document with the best child vector, or all child vectors.
> A draft pull request will be available soon, then documentation and
> discussion will follow.
> N.B. this is not meant to be perfect, it's a sponsored contribution by a
> client of ours that I believe can be useful to a wider audience
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