Vector, Matrix, and Tensor Derivatives
vector associated with the corresponding row of the input X. Sticking to our technique of writing down an expression for a given component of the output, we have Y i;j = XD k=1 X i;kW k;j: We can see immediately from this equation that among the derivatives @Y a;b @X c;d; they are all zero unless a = c. That is, since each component of Y is ...
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