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Posted to issues@lucene.apache.org by "Adrien Grand (Jira)" <ji...@apache.org> on 2019/10/04 16:28:00 UTC
[jira] [Commented] (LUCENE-8928) BKDWriter could make splitting
decisions based on the actual range of values
[ https://issues.apache.org/jira/browse/LUCENE-8928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16944647#comment-16944647 ]
Adrien Grand commented on LUCENE-8928:
--------------------------------------
I haven't looked at the code, but based on your description this looks interesting. Maybe open a PR?
> BKDWriter could make splitting decisions based on the actual range of values
> ----------------------------------------------------------------------------
>
> Key: LUCENE-8928
> URL: https://issues.apache.org/jira/browse/LUCENE-8928
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
>
> Currently BKDWriter assumes that splitting on one dimension has no effect on values in other dimensions. While this may be ok for geo points, this is usually not true for ranges (or geo shapes, which are ranges too). Maybe we could get better indexing by re-computing the range of values on each dimension before making the choice of the split dimension?
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