[GitHub] [incubator-mxnet] david-seiler opened a new pull request #14579: PDF operators for each distribution

[GitBox <gi...@apache.org>]

david-seiler opened a new pull request #14579: PDF operators for each distribution
URL: https://github.com/apache/incubator-mxnet/pull/14579
 
 
   ## Description ##
   This PR adds operators for computing the densities of samples drawn from any of the various distributions defined in operator/random, as well as their gradients.  There are lots of changes to test_random.py to test each PDF alongside its distribution; aside from that, the patch should be entirely stand-alone.  See pdf_op.cc for more-detailed description strings.
   
   ## Checklist ##
   ### Essentials ###
   Please feel free to remove inapplicable items for your PR.
   - [x] Changes are complete (i.e. I finished coding on this PR)
   - [x] All changes have test coverage:
   - Unit tests are added for small changes to verify correctness (e.g. adding a new operator)
   - [x] Code is well-documented: 
   - For user-facing API changes, API doc string has been updated. 
   - For new C++ functions in header files, their functionalities and arguments are documented. 
   - [x] To the my best knowledge, examples are either not affected by this change, or have been fixed to be compatible with this change
   

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