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https://issues.apache.org/jira/browse/LUCENE-10015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17385488#comment-17385488
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Tomoko Uchida commented on LUCENE-10015:
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I am fine with the current field API, sorry for the disturbance.
Besides whether the similarity function should be configurable by users, I
agree with it is surely search-algorithm independent feature - the most ann/knn
algorithms are distance-measure agnostic in my understanding (maybe Humming
distance would be also worth supported).
> Remove VectorValues.SimilarityFunction, remove NONE
> ---------------------------------------------------
>
> Key: LUCENE-10015
> URL: https://issues.apache.org/jira/browse/LUCENE-10015
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Robert Muir
> Priority: Blocker
> Fix For: 9.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> This stuff is HNSW-implementation specific. It can be moved to a codec
> parameter.
> The NONE option should be removed: it just makes the codec more complex.
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