samer@4: function [Y,Z]=stochastic(X),
samer@4: % stochastic - make rows sum to one (like probabilities)
samer@4: %              optionally returns the row sums as well
samer@4: %
samer@4: % stochastic :: [[N,M]] -> [[N,M]], [[N]].
samer@4: 
samer@4: Z=sum(X,2);
samer@4: Y=X./repmat(max(Z,realmin),1,size(X,2));
samer@4: