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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Trivial Update of "Architecture" by udanax
Date Fri, 19 Dec 2008 09:43:20 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hama Wiki" for change notification.

The following page has been changed by udanax:

  == Building Block ==
- [http://wiki.apache.org/hama-data/attachments/Architecture/attachments/diagram.jpg]
+ [http://wiki.apache.org/hama-data/attachments/Architecture/attachments/block.png]
  To store the matrices, Hama use a [http://hadoop.apache.org/hbase/ Hbase] -- Matrices are
basically tables. They are ways of storing numbers and other things. Typical matrix has rows
and columns. Actually called a 2-way matrix because it has two dimensions. For example, you
might have respondents-by-attitudes. Of course, you might collect the same data on the same
people at 5 points in time. In that case, you either have 5 different 2-way matrices, or you
could think of it as a 3-way matrix, that is respondent-by-attitude-by-time.

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