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https://issues.apache.org/jira/browse/MAHOUT-1005?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268045#comment-13268045
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Jake Mannix commented on MAHOUT-1005:
-------------------------------------

So that test was passing before the change?  

It looks like this new solver thinks that the vectors are bigger than they 
should be?  But then how could the DistributedLanczosSolverTest be passing in 
the other unit tests?  Hmmmm...
                
> Nuke Colt math functions that remain untested - The Matrix edition
> ------------------------------------------------------------------
>
>                 Key: MAHOUT-1005
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1005
>             Project: Mahout
>          Issue Type: Bug
>          Components: Math
>    Affects Versions: 0.5, 0.6
>            Reporter: Ted Dunning
>            Assignee: Ted Dunning
>             Fix For: 0.7
>
>         Attachments: MAHOUT-1005.patch
>
>
> We are down to very few references to Colt's matrix capabilities.
> I have implemented a new eigen-solver (with tests) and updated the Lanczos 
> code to use it.  I also have nuked all of the DoubleMatrix*d and related 
> classes and consolidated several others.

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