[Hama Wiki] Trivial Update of "Architecture" by udanax

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The following page has been changed by udanax:
http://wiki.apache.org/hama/Architecture

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  - Reduce task sum the absolute values of column, select the one maximum one.
  }}}
  
+ NOTE: Matrix.Maxvalue and Matrix.Frobenius are almost same with this.
+ 
  === Compute the transpose of dense/sparse matrix ===
  
  The transpose of a matrix is another matrix in which the rows and columns have been reversed. The matrix must be square for this work.