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Posted to issues@lucene.apache.org by "Mayya Sharipova (Jira)" <ji...@apache.org> on 2021/08/18 13:54:00 UTC

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

Mayya Sharipova created LUCENE-10054:
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             Summary: 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


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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