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Posted to issues@lucene.apache.org by "Alessandro Benedetti (Jira)" <ji...@apache.org> on 2022/04/20 15:06:00 UTC

[jira] [Updated] (LUCENE-10054) Handle hierarchy in HNSW graph

     [ https://issues.apache.org/jira/browse/LUCENE-10054?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alessandro Benedetti updated LUCENE-10054:
------------------------------------------
    Labels: vector-based-search  (was: )

> 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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