File Exchange

image thumbnail

Tensor matrix multiply

version 1.0.0.0 (2.58 KB) by Oliver Woodford
Matrix multiplication over tensor arrays (i.e. arrays of matrices), with matrix transposition.

7 Downloads

Updated 24 Feb 2017

View License

C = tmult(A, B) is equivalent to:
sz = [size(B) 1];
sz(1) = size(A, 1);
C = zeros(sz);
for a = 1:prod(sz(3:end))
C(:,:,a) = A(:,:,a) * B(:,:,a);
end

but is completely vectorized, so much faster. Tmult also supports bsxfun-style expansion of singular dimensions where appropriate, such that tmult(rand(4, 3, 10), rand(3, 2)) yields a 4x2x10 output.

Cite As

Oliver Woodford (2020). Tensor matrix multiply (https://www.mathworks.com/matlabcentral/fileexchange/61754-tensor-matrix-multiply), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (1)

Ludwig Wagmüller

MATLAB Release Compatibility
Created with R14
Compatible with any release
Platform Compatibility
Windows macOS Linux

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!