Hey there, I'm doing tests with the DistributedRowMatrix and I have a doubt about the implementation. The value, of each Seqfile entry, VectorWritable, contains the index of the column and the value for each non zero value of all the columns. So, if I want to generate a matrix with a SeqfileWriter, each value of the seqfile (index of the column + value for each column) has to feed in memory so once created I can append it to the Seqfile. Am I right? In case yes, is there in Mahout any matrix implementation which is row and column distributable? I'm thinking for example the case of having to do the /times/ operation of two huge matrix with no zero values. Thanks in advance.
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