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Posted to reviews@spark.apache.org by desperadoxx <gi...@git.apache.org> on 2018/06/05 13:44:04 UTC

[GitHub] spark issue #18337: [SPARK-21131][GraphX] Fix batch gradient bug in SVDPlusP...

Github user desperadoxx commented on the issue:

    https://github.com/apache/spark/pull/18337
  
    I also met this problem. The rmse doesn't get converged on some common dataset, including movielens.
    At least, it should not be clipped by maxValue and minValue when computing the gradient, which will change loss function to non-convex, but the original is convex.


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