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| function z = nmi(x, y) | |
| % Compute normalized mutual information I(x,y)/sqrt(H(x)*H(y)) of two discrete variables x and y. | |
| % Input: | |
| % x, y: two integer vector of the same length | |
| % Ouput: | |
| % z: normalized mutual information z=I(x,y)/sqrt(H(x)*H(y)) | |
| % Written by Mo Chen (sth4nth@gmail.com). | |
| assert(numel(x) == numel(y)); | |
| n = numel(x); | |
| x = reshape(x,1,n); |