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From myui <>
Subject [GitHub] incubator-hivemall issue #87: [HIVEMALL-108] Support `-iter` option in gener...
Date Tue, 04 Jul 2017 06:46:05 GMT
Github user myui commented on the issue:
    > What -tol did is to compare the absolute difference between the last and current
cumulative loss; that is, the initial implementation checked convergence based on absolute
difference. Meanwhile, -cv_rate looks relative difference. Hence, in a precise sense, your
commit feb9bb1 is not "refactor," and I need to find a completely different optimal combination
of hyper-parameters for testing.
    `absolute difference => relative difference` DOES NOT explain too large loss in the
middle of iterations. Even without conversion checks, it was never converged. 
    Iterations were converged when using absolute difference and `Assert.assertTrue(cumLoss
/ samplesList.size() < 0.5d);` was passing. Why?

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