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https://issues.apache.org/jira/browse/HAMA-79?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638962#action_12638962
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Samuel Guo commented on HAMA-79:
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why we map a 2D matrix onto a 1D map? Is there any advantage of this kind of
format? I am confusing about it.
> MappedMatrix Input/output formatter
> -----------------------------------
>
> Key: HAMA-79
> URL: https://issues.apache.org/jira/browse/HAMA-79
> Project: Hama
> Issue Type: New Feature
> Components: mapred
> Reporter: Edward J. Yoon
> Fix For: 0.1.0
>
>
> MappedMatrixInput/Output formmatter is implementation of an row by column
> matrix as a one-dimensional map.
> A 2D matrix can be mapped onto a 1D map, like so:
> [a b c]
> [d e f]
> <<row0,column0>, a>
> <<row0,column1>, b>
> ...
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