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https://issues.apache.org/jira/browse/LUCENE-10612?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17553518#comment-17553518
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Elia Porciani commented on LUCENE-10612:
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Actually, the change I'm proposing is to make it possible to specify the
parameters for HNSM without the need to know which HNWS codec is used
underlying.
For instance, In Solr, this is done in the way you mentioned but there is an
explicit call of the *Lucene91HnswVectorsFormat* and for this reason, Solr
cannot be agnostic about the codec version used in Lucene for HNSM.
> Add parameters for HNSW codec in Lucene93Codec
> ----------------------------------------------
>
> Key: LUCENE-10612
> URL: https://issues.apache.org/jira/browse/LUCENE-10612
> Project: Lucene - Core
> Issue Type: Task
> Components: core/codecs
> Reporter: Elia Porciani
> Priority: Major
>
> Currently, it is possible to specify only the compression mode for stored
> fields in the LuceneXXCodec constructors.
> With the introduction of HNSW graph, and the LuceneXXHnswCodecFormat,
> LuceneXXCodec should provide an easy way to specify custom parameters for
> HNSW graph layout:
> * maxConn
> * beamWidth
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