Follow up on MAHOUT-541
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Key: MAHOUT-620
URL: https://issues.apache.org/jira/browse/MAHOUT-620
Project: Mahout
Issue Type: Bug
Components: Collaborative Filtering
Affects Versions: 0.5
Reporter: Tamas Jambor
Assignee: Sean Owen
I have made some of the changes I suggested for MAHOUT-541.
1, some bug fixes
2, changed the way random noise was added
3, when to shuffle the preference values
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