Dmitriy Lyubimov created MAHOUT-1717:
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Summary: allReduce operator api and Spark implementation
Key: MAHOUT-1717
URL: https://issues.apache.org/jira/browse/MAHOUT-1717
Project: Mahout
Issue Type: Improvement
Reporter: Dmitriy Lyubimov
Assignee: Dmitriy Lyubimov
Fix For: 0.10.2
need it surprisingly often.
allreduceMap ( map: (keys, Matrix) => Matrix, reduce: (Matrix, Matrix) =>
Matrix) : Matrix
again since we cannot guarantee we'd ask engines to serialize any type, we
operate on types we do know will work (I.e. matrix blocks).
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