The random matrix that dmitriy has uses MurmurHash based on the two indices to create the random values. They aren't cached since they are generated fairly quickly.
On Wed, Apr 6, 2011 at 12:36 AM, Sean Owen (JIRA) <[email protected]> wrote: > > [ > https://issues.apache.org/jira/browse/MAHOUT-550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016285#comment-13016285] > > Sean Owen commented on MAHOUT-550: > ---------------------------------- > > Well it turns out MersenneTwisterRNG won't take a new seed, but it just > means setSeed() in RandomWrapper needs to make a new RNG instead. I can add > that, it's a detail. > > > 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. > > -- > This message is automatically generated by JIRA. > For more information on JIRA, see: http://www.atlassian.com/software/jira >
