hetong007 commented on issue #17207: LR schedulers do not work in R URL: https://github.com/apache/incubator-mxnet/issues/17207#issuecomment-576702405 Well it looks like the optimizer implementation doesn't consider the learning rate from the scheduler: https://github.com/apache/incubator-mxnet/blob/master/R-package/R/optimizer.R#L40 A quick fix would be checking the existence of the scheduler before `lr <- learning.rate`. It has been like this before the PR.
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