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From Apache Wiki <>
Subject [Incubator Wiki] Trivial Update of "HamaProposal" by udanax
Date Mon, 12 May 2008 23:58:47 GMT
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The following page has been changed by udanax:

  == Rationale ==
  Hama approach proposes the use of 3-dimensional Row and Column (Qualifier), Time space and
multi-dimensional Columnfamilies of [ Hbase], which is able
to store large sparse and various type of matrices (e.g. Triangular Matrix, 3D Matrix, and
etc.) and utilize the 2D blocked algorithm. its auto-partitioned sparsity sub-structure will
be efficiently managed and serviced by Hbase. Row and Column operations can be done in linear-time,
where several algorithms, such as ''structured Gaussian elimination'' or ''iterative methods'',
run in O(the number of non-zero elements in the matrix / number of mappers) time on Hadoop
+ []
  == Current Status ==

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