28 lines
730 B
Matlab
Executable File
28 lines
730 B
Matlab
Executable File
function sim = gaussianKernel(x1, x2, sigma)
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%RBFKERNEL returns a radial basis function kernel between x1 and x2
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% sim = gaussianKernel(x1, x2) returns a gaussian kernel between x1 and x2
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% and returns the value in sim
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% Ensure that x1 and x2 are column vectors
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x1 = x1(:); x2 = x2(:);
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% You need to return the following variables correctly.
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sim = 0;
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% ====================== YOUR CODE HERE ======================
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% Instructions: Fill in this function to return the similarity between x1
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% and x2 computed using a Gaussian kernel with bandwidth
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% sigma
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%
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%
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diff = (x1-x2);
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sim = exp( - diff' * diff / ( 2 * sigma^2))
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% =============================================================
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end
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