Matlab/Octave 1-of-K representation

Question

I have a y of size 5000,1 (matrix), which contains integers between 1 and 10. I want to expand those indices into a 1-of-10 vector. I.e., y contains 1,2,3... and I want it t

Answer 1

You can try cellfun operations:

function vector = onehot(vector,decimal)
    vector(decimal)=1;
end
aa=zeros(10,2);
dec=[5,6];
%split into columns
C=num2cell(aa,1);
D=num2cell(dec,1);
onehotmat=cellfun("onehot",C,D,"UniformOutput",false);
output=cell2mat(onehotmat);