dcslin commented on issue #597: added tensor index selector URL: https://github.com/apache/singa/pull/597#issuecomment-588006821 > Hi, @dcslin, for the backward of CNN, I guess I should firstly pad the dy as its shape same with the shape before index selection. So, I need a function that can add one column and row at the end or start of the matrix. For example, for "SAME_UPPER" mode, and output shape of [3,3,32,32], I need to pad one column and one row at the end of the dy to make the shape as [3,3,32,32]. hi could it be done in reverse way? add extra padding and make it symmetrical, and trim off one column by using the selection[].
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