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https://issues.apache.org/jira/browse/SOLR-17975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18052494#comment-18052494
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Chris M. Hostetter commented on SOLR-17975:
-------------------------------------------
Since SOLR-18033 was resolved, tests in this branch have been passing, and I've
been fleshing out the remaining tests/nocommits -- including ref-guide updates.
Since there hasn't really been any concrete movement/momentum towards a
generalized solution to SOLR-17974, I've continued on with the "Stringified
multi-vectors" approach in my original straw-man patch -- both at index time
and query time -- but I've renamed the field type to
{{StrFloatLateInteractionVectorField}} and introduced a marker interface in the
{{lateInteraction()}} implementation. This leave the door open for alternative
impls in the future -- either using alternative external representation, or
using alternative internal fields if Lucene decides to add byte or int based
Late Interaction fields later.
I think this approach gives us enough flexibility to consider this branch ready
to merge into {{main}} and {{branch_10x}} .
Objections?
> Add support for Lucene's LateInteractionField
> ---------------------------------------------
>
> Key: SOLR-17975
> URL: https://issues.apache.org/jira/browse/SOLR-17975
> Project: Solr
> Issue Type: New Feature
> Components: vector-search
> Reporter: Chris M. Hostetter
> Assignee: Chris M. Hostetter
> Priority: Major
> Attachments: SOLR-17975.patch
>
>
> Lucene 10.3 added a
> [LateInteractionField.|https://lucene.apache.org/core/10_3_1/core/org/apache/lucene/document/LateInteractionField.html].
> Basic support for this in Solr would be a new {{FieldType}} and some
> associated {{QParser}} support to be able to use tose fields in conjunction
> iwth Lucene's {{TestRescoreTopNQuery}} and/or {{LateInteractionRescorer}}
> (and/or {{LateInteractionFloatValuesSource}} + {{DoubleValuesSourceRescorer}}
> -- see SOLR-17951)
> BUT! ... the most complex part of figuring out ow to support
> {{LateInteractionField}} in Solr is going to come down to what the field
> values should look like when adding/updating docs containing this field --
> and what the query input should look like -- given that the field values are
> "multi-dimensional array of floats"
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