At the present time, dense matrix/vector almost implemented except below list:
 Matrix.Norm
 DenseMatrix.multAdd(double alpha, Matrix B, Matrix C)
Matrix.Norm.One is that find the maximum absolute row sum of matrix.
Here's my mapreduce idea.
 A map task receives a row n as a key, and vector of each row as its value
 emit (row, the sum of the absolute value of each entries)
 Reduce task select the maximum one
Does anyone can help me to implement this?
And, Any advices are welcome.

Best Regards, Edward J. Yoon
edwardyoon@apache.org
http://blog.udanax.org
