[jira] [Updated] (SPARK-13042) Adding Specificity metric (= true negative rate) to MulticlassMetrics.scala

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-13042?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated SPARK-13042:
------------------------------
    Target Version/s:   (was: 1.6.0)
       Fix Version/s:     (was: 1.6.0)

[~dmarcous@gmail.com] this is also still wrong. It can't target or be fixed in 1.6.0; you shouldn't set these anyway. Please read the guidelines carefully first. I am not clear this is worth adding anyway, and am inclined to close it.

> Adding Specificity metric (= true negative rate) to MulticlassMetrics.scala
> ---------------------------------------------------------------------------
>
>                 Key: SPARK-13042
>                 URL: https://issues.apache.org/jira/browse/SPARK-13042
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Daniel Marcous
>            Priority: Minor
>              Labels: metrics, mllib
>   Original Estimate: 12h
>  Remaining Estimate: 12h
>
> Adding Specificity metric (= true negative rate) to MulticlassMetrics.scala
> 1. Add specificity calculations:
> pecificity (SPC) or true negative rate
> SPC = TN / N = TN / (TN+FP) 
> False Positive Rate (FPR)
> FPR = FP / N = FP / (FP + TN) = 1-SPC
> SPC = 1 - FPR
> 2. Add specificity tests to :
> mllib/src/test/scala/org/apache/spark/mllib/evaluation/MulticlassMetricsSuite.scala



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