I'm doing the following convolution with expand = false:

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`data(span, span, k) dims=[256 64]`

W(span, span, j) dims=[8 64]

z dims=[256 64]

The input matrices are data and W and the output is z.

I expected the output to be in size [249 1] since I assume expand=false means no padding of zeros.

Is that wrong? How can I achieve a convolution like MATLAB's 'valid' option?

Thanks.