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From "Bill Havanki" <bhava...@clouderagovt.com>
Subject Re: Review Request 19368: ACCUMULO-2494 Fix calcualtion of stdev
Date Tue, 18 Mar 2014 19:52:01 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/19368/#review37616
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How about using Commons Math's StandardDeviation class instead of trying to get this right
ourselves?

http://commons.apache.org/proper/commons-math/javadocs/api-3.2/org/apache/commons/math3/stat/descriptive/moment/StandardDeviation.html

- Bill Havanki


On March 18, 2014, 3:44 p.m., Mike Drob wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/19368/
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> 
> (Updated March 18, 2014, 3:44 p.m.)
> 
> 
> Review request for accumulo.
> 
> 
> Bugs: ACCUMULO-2494
>     https://issues.apache.org/jira/browse/ACCUMULO-2494
> 
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> Repository: accumulo
> 
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> Description
> -------
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> ACCUMULO-2494 Fix calcualtion of stdev
> 
> 
> Diffs
> -----
> 
>   core/src/main/java/org/apache/accumulo/core/util/Stat.java e65265c6decde47ef229377653112a677fef8112

>   core/src/test/java/org/apache/accumulo/core/util/StatTest.java PRE-CREATION 
> 
> Diff: https://reviews.apache.org/r/19368/diff/
> 
> 
> Testing
> -------
> 
> Unit tests results compared with calculations from Wolfram Alpha.
> 
> 
> Thanks,
> 
> Mike Drob
> 
>


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