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calculate weigths gradient and input grdient, how to understand rot180, flipall #169

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lixiaohui2020 opened this issue Dec 7, 2016 · 0 comments

lixiaohui2020 commented Dec 7, 2016

 z = z + convn(net.layers{l + 1}.d{j}, rot180(net.layers{l + 1}.k{i}{j}), 'full');
net.layers{l}.dk{i}{j} = convn(flipall(net.layers{l - 1}.a{i}), net.layers{l}.d{j}, 'valid') / size(net.layers{l}.d{j}, 3);

how to understand rot180 and 'full'?
how to understand flipall, 'valid'?

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