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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Trivial Update of "Architecture" by udanax
Date Mon, 16 Mar 2009 08:44:04 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:
http://wiki.apache.org/hama/Architecture

The comment on the change is:
Typos.

------------------------------------------------------------------------------
  ----
  = Overview =
  
- This is intended to explain and illustrate the concept of Hama. There are two main parts:

+ This is intended to explain and to illustrate the concept of Hama. There are two main parts:

   
   * How to store the matrices?
   * How to perform matrix operations using !MapReduce?
@@ -19, +19 @@

  
  = Store Dense/Sparse Matrices =
  
- 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.
+ 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  which is often 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.
  
  -- ''Just a thought, considering the depleted activity in HBase should we not explore ways
to avoid HBase ? --Prasen ''
  

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