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Matlab

10 years ago
function sim = linearKernel(x1, x2)
%LINEARKERNEL returns a linear kernel between x1 and x2
% sim = linearKernel(x1, x2) returns a linear kernel between x1 and x2
% and returns the value in sim
% Ensure that x1 and x2 are column vectors
x1 = x1(:); x2 = x2(:);
% Compute the kernel
sim = x1' * x2; % dot product
end