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https://issues.apache.org/jira/browse/LUCENE-8208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16400612#comment-16400612
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Ignacio Vera commented on LUCENE-8208:
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Attached a patch with a simple test.
> Vector.isNumericallyIdentical() can produce unexpected results
> --------------------------------------------------------------
>
> Key: LUCENE-8208
> URL: https://issues.apache.org/jira/browse/LUCENE-8208
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/spatial3d
> Reporter: Ignacio Vera
> Priority: Major
> Attachments: LUCENE-8208.patch
>
>
> The method {{Vector.isNumericallyIdentical()}} seems to produce wrong results
> in some cases. For example it considers that vectors (1,0,0) and (-1,0,0) are
> numerically identical whichI is probably wrong.
> This behavior might produce unexpected behaviors down the line.
>
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