Fix for ALS calculate_loss on the cpu #662
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We weren't calculating the loss correctly for CPU ALS models, when regularization was non-zero. In addition to incorrect results, this also could cause a segfault in certain conditions. Fix.
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We weren't calculating the loss correctly for CPU ALS models, when regularization was non-zero. In addition to incorrect results, this also could cause a segfault in certain conditions.
Fix.