joddiy opened a new pull request #545: SINGA-494 Singa autograd improvement URL: https://github.com/apache/incubator-singa/pull/545 ## Background: some autograd ops cannot satisfy the onnx demand, as following: ### conv, averagepool, maxpool - only support 2d input, i.e, N/*C/*W/*H - not support SAME_UPPER, SAME_LOWER, count_include_pad and ceil_mode ### reshape - not support zero_dim, zero_and_negative_dim ### concat - not support 1d ### matmul - only support 2d ### min, max - only support 2 inputs ### add - not support broadcast ### and, or, xor - not support broadcast ### div, pow, prelu - not support broadcast
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