wehub-resource-sync
25 lines
435 B
Matlab
Executable File
25 lines
435 B
Matlab
Executable File
function K = knPoly(X, Y, o, c)
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% Polynomial kernel k(x,y)=(x'y+c)^o
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% Input:
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% X: d x nx data matrix
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% Y: d x ny data matrix
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% o: order of polynomial
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% c: constant
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% Ouput:
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% K: nx x ny kernel matrix
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% Written by Mo Chen (sth4nth@gmail.com).
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if nargin < 4
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c = 0;
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end
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if nargin < 3
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o = 3;
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end
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if nargin < 2 || isempty(Y)
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K = (dot(X,X,1)+c).^o; % norm in kernel space
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else
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K = (X'*Y+c).^o;
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end
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