Possibility of multidimensional arrays multiplication

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Juraj
Juraj le 20 Nov 2013
Hello,
is there a way to perform a matrix multiplication with multidimensional arrays without using a loop? Specifically, I have a 3-dimensional array A_ijk that I want to multiply with a vector b_k in such a way, that the result is a 2D matrix B_ij=A_ijk*b_k, where I sum over k.
I know how to do this using a loop, but I would like to do it in a different way, analogous to matrix multiplication because of effectivness and time consumed (the matrixes are quite big). Thanks in advance, Juraj

Réponse acceptée

Azzi Abdelmalek
Azzi Abdelmalek le 20 Nov 2013
sum(bsxfun(@times,A,b),3)

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