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https://issues.apache.org/jira/browse/LUCENE-10054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571588#comment-17571588
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Mike Sokolov commented on LUCENE-10054:
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what is it with this issue that spammers love so much!? I wonder if we
could somehow lock it as read-only ...
> Handle hierarchy in HNSW graph
> ------------------------------
>
> Key: LUCENE-10054
> URL: https://issues.apache.org/jira/browse/LUCENE-10054
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Mayya Sharipova
> Priority: Major
> Labels: vector-based-search
> Fix For: 9.1
>
> Time Spent: 20h 20m
> Remaining Estimate: 0h
>
> Currently HNSW graph is represented as a single layer graph.
> We would like to extend it to handle hierarchy as per
> [discussion|https://issues.apache.org/jira/browse/LUCENE-9004?focusedCommentId=17393216&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-17393216].
>
>
> TODO tasks:
> - add multiple layers in the HnswGraph class
> - modify the format in Lucene90HnswVectorsWriter and
> Lucene90HnswVectorsReader to handle multiple layers
> - modify graph construction and search algorithm to handle hierarchy
> - run benchmarks
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