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From "ASF GitHub Bot (JIRA)" <>
Subject [jira] [Commented] (MAHOUT-1926) Linear Regression Model can generate p-values outside of [0,1]
Date Mon, 27 Feb 2017 03:28:46 GMT


ASF GitHub Bot commented on MAHOUT-1926:

GitHub user rawkintrevo opened a pull request:

    MAHOUT-1926 Fix p-value calculation


You can merge this pull request into a Git repository by running:

    $ git pull mahout-1926

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #288
commit 197a536b97fc4cb03ce9359dca8178c488786bb8
Author: rawkintrevo <>
Date:   2017-02-27T03:27:10Z

    MAHOUT-1926 Fix p-value calculation


> Linear Regression Model can generate p-values outside of [0,1]
> --------------------------------------------------------------
>                 Key: MAHOUT-1926
>                 URL:
>             Project: Mahout
>          Issue Type: Bug
>          Components: Algorithms
>    Affects Versions: 0.13.0
>            Reporter: Trevor Grant
>            Assignee: Trevor Grant
>             Fix For: 0.13.0
> Anecdotally, the p-values reported by the ordinary least squares model (utilizing the
functionality in the parent, LinearRegressionFitter) have been reported outside the range
of [0,1] which is nonsensical. 
> Need to recreate problem with toy data set, fix, and add test. 

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