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https://issues.apache.org/jira/browse/MAHOUT-550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016273#comment-13016273
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Lance Norskog commented on MAHOUT-550:
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The Random returned by RandomUtils does not honor setSeed(). And so, it is not
possible to make a repeatable RandomVector/RandomMatrix. Thus, it forces
java.util.Random.
All in all, I can't say this was worth the effort, but I learned about Matrix
and Vector management. Making read-only versions of Matrix and Vector was hard,
and may turn out to be too annoying to maintain.
> Add RandomVector and RandomMatrix
> ---------------------------------
>
> Key: MAHOUT-550
> URL: https://issues.apache.org/jira/browse/MAHOUT-550
> Project: Mahout
> Issue Type: New Feature
> Components: Math
> Reporter: Lance Norskog
> Assignee: Sean Owen
> Attachments: MAHOUT-550.patch, MAHOUT-550.patch, RandomMatrix.patch
>
>
> Add Vector and Matrix implementations that generate a unique and reproducible
> random number for each index.
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