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https://issues.apache.org/jira/browse/HAMA-11?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12618921#action_12618921
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Edward J. Yoon commented on HAMA-11:
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-added addition map/reduce classes
> Adding and Subtracting Matrices
> -------------------------------
>
> Key: HAMA-11
> URL: https://issues.apache.org/jira/browse/HAMA-11
> Project: Hama
> Issue Type: Improvement
> Components: algorithm
> Reporter: Edward J. Yoon
>
> Matrix addition/subtraction is fairly simple, and is done entry-wise. For
> instance:
> If Matrix A = {[a, b], [c, d]}, Matrix B = {[e, f], [g, h]},
> A + B
> Add the pairs of entries, and simplify for the final answer:
> {[a, b], [c, d]} + {[e, f], [g, h]} = {[a + e, b + f], [c + g, d + h]}
> So, we can solve this using the mapreduce by 1D row-wise partitioning.
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