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https://issues.apache.org/jira/browse/LUCENE-7305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tommaso Teofili resolved LUCENE-7305.
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Resolution: Fixed
> Use macro average in confusion matrix metrics to normalize imbalanced classes
> -----------------------------------------------------------------------------
>
> Key: LUCENE-7305
> URL: https://issues.apache.org/jira/browse/LUCENE-7305
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/classification
> Reporter: Tommaso Teofili
> Assignee: Tommaso Teofili
> Fix For: 6.1
>
>
> {{ConfusionMatrix}} multi class measures should be based on macro average to
> avoid bias (for the good or the bad) from imbalanced classes.
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