[GitHub] bzcheeseman opened a new pull request #12467: Add PolyScheduler which mimics the caffe polynomial lr scheduler

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bzcheeseman opened a new pull request #12467: Add PolyScheduler which mimics the caffe polynomial lr scheduler
URL: https://github.com/apache/incubator-mxnet/pull/12467
 
 
   ## Description ##
   (Brief description on what this PR is about)
   In reproducing a network originally defined in Caffe, I realized that MXNet had no equivalent LR scheduler. As a user of MXNet, I would like to be able to use such an LR scheduler, so I added one.
   
   ## Checklist ##
   ### Essentials ###
   - [x] Changes are complete (i.e. I finished coding on this PR)
   - [ ] All changes have test coverage:
   - No tests exist currently for LR Scheduler(s), willing to add some if that is deemed useful.
   - [ ] Code is well-documented: 
   - Matches previous LR scheduler implementation, also willing to add some if deemed useful.
   - [x] To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change
   
   ### Changes ###
   - [x] Add `PolyScheduler` in `cpp-package/include/mxnet-cpp/lr_scheduler.h`
   
   ## Comments ##
   - Matches quite closely the FactorScheduler implementation just above, but am happy to make other changes.

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