hzfan opened a new pull request #15911: [Numpy] einsum URL: https://github.com/apache/incubator-mxnet/pull/15911 ## Description ## numpy compatible [einsum](https://docs.scipy.org/doc/numpy/reference/generated/numpy.einsum.html) ### Changes ### - add einsum - add einsum doc - add path optimization - add benchmark - add forward and backward test ## Comments ## - support both explicit and implicit mode - support multiple operands - support broadcast - support 0-dim NDArray and 0-size NDArray - cannot work until multiple tempspace is enabled ## TODO ## - [x] translate einsum_path into c, so that optimization can work in symbol mode - [x] take advantage of tensordot when it is merged - [x] support "greedy" optimization - [ ] support "optimal" optimization Thank @reminisce and @haojin2 for guidance and review.
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