Hi, There seems to be no Hadoop implementation of ParallelSGDFactorizer. ALSWRFactorizer has a Hadoop implementation.
ParallelSGDFactorizer (since it is based on stochastic gradient descent) is much faster than ALSWRFactorizer. I don't know Hadoop much. But it seems to me that a Hadoop implementation of ParallelSGDFactorizer will also be much faster than the Hadoop implementaion of ALSWRFactorizer. Is there a specific reason for why there is no Hadoop implementation of ParallelSGDFactorizer? Is it because since Hadoop operations are already slow the slowness of ALSWRFactorizer does not matter much. Or is it simply because nobody has implemented it yet? Thanks Tevfik
