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https://issues.apache.org/jira/browse/MATH-1519?focusedWorklogId=400231&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-400231
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ASF GitHub Bot logged work on MATH-1519:
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Author: ASF GitHub Bot
Created on: 09/Mar/20 16:59
Start Date: 09/Mar/20 16:59
Worklog Time Spent: 10m
Work Description: chentao106 commented on pull request #123: MATH-1519
Implement Calinski-Harabasz clusters evaluator.
URL: https://github.com/apache/commons-math/pull/123
MATH-1519 Implement Calinski-Harabasz clusters evaluator.
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> Implement the Calinski-Harabasz clusters evaluator
> --------------------------------------------------
>
> Key: MATH-1519
> URL: https://issues.apache.org/jira/browse/MATH-1519
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Chen Tao
> Priority: Major
> Labels: features
> Time Spent: 10m
> Remaining Estimate: 0h
>
> It is also known as the Variance Ratio Criterion.
> The Calinsk-iHarabasz score is defined as ratio between the within-cluster
> dispersion and the between-cluster dispersion, can be used to evaluate the
> model, where a higher Calinski-Harabasz score relates to a model with better
> defined clusters.
> For more information, please read:
> https://scikit-learn.org/stable/modules/generated/sklearn.metrics.calinski_harabasz_score.html
> https://www.tandfonline.com/doi/abs/10.1080/03610927408827101
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