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- function sim = gaussianKernel(x1, x2, sigma)
- %RBFKERNEL returns a radial basis function kernel between x1 and x2
- % sim = gaussianKernel(x1, x2) returns a gaussian kernel between x1 and x2
- % and returns the value in sim
- % Ensure that x1 and x2 are column vectors
- x1 = x1(:); x2 = x2(:);
- % You need to return the following variables correctly.
- sim = exp(-sum((x1 - x2) .^ 2) / 2 / sigma ^ 2);
- % ====================== YOUR CODE HERE ======================
- % Instructions: Fill in this function to return the similarity between x1
- % and x2 computed using a Gaussian kernel with bandwidth
- % sigma
- %
- %
- % =============================================================
-
- end
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