No momentum for LBSGD

Discussion
1

I see that LBSGD is not listed as an optimizer with momentum in incubator-mxnet/example/image-classification/common/fit.py, but it indeed has the functions to create states for it. I was wondering if it was disabled because of some reason.

See this issue, which was closed in favor of this discussion topic: https://github.com/apache/incubator-mxnet/issues/11620#issuecomment-403648924

2

Probably the doc hasn’t been updated. Cannot think of a reason not being able to use momentum.

3

Agreed, just looks like it wan’t updated when these optimizers were added. Will ask for the Github issue to be reopened, and tagged correctly. Good spot @al-rigazzi!

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