[jira] [Resolved] (MATH-1519) Implement the Calinski-Harabasz clusters evaluator

["Gilles Sadowski (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MATH-1519?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gilles Sadowski resolved MATH-1519.
-----------------------------------
    Resolution: Done

Commit 17e8430cbba42e93ffcd126b11b7286bec8ac31c ("master" branch).

> 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: 20m
>  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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