eric-haibin-lin opened a new issue #8583: Improve custom cross-entropy operator example URL: https://github.com/apache/incubator-mxnet/issues/8583 In the recommender example, the custom cross-entropy operator can be implemented using NDArray instead of numpy, which gives much better performance. Changing the implementation to use NDArray will help other users who is learning MXNet / trying to use MXNet with custom ops. https://github.com/apache/incubator-mxnet/blob/master/example/recommenders/crossentropy.py
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