onomatet commented on issue #17207: LR schedulers do not work in R URL: https://github.com/apache/incubator-mxnet/issues/17207#issuecomment-576714416 @hetong007 Thank you for your reply! Honestly, I don't see how would it help. lr schedulers are called properly on every update here https://github.com/apache/incubator-mxnet/blob/25505e9da4ea24ce37f1e60916d1afc3fcd15300/R-package/R/optimizer.R#L86 and they modify the `lr` parameter in the `sgd` namespace. From my understanding, however, it doesn't matter since `lr` is a property of the `mx.symbol.sgd_mom_update` which cannot be changed after the correspondig executor `exec` is created in https://github.com/apache/incubator-mxnet/blob/25505e9da4ea24ce37f1e60916d1afc3fcd15300/R-package/R/optimizer.R#L79 (or can it?)
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