Need row and column views and aggregates ----------------------------------------
Key: MAHOUT-452
URL: https://issues.apache.org/jira/browse/MAHOUT-452
Project: Mahout
Issue Type: Bug
Reporter: Ted Dunning
It is common to need to sum up the rows of a matrix or to operate on a view of
a row rather than a copy.
I just ran into this big time so I implemented these operations.
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