i want to train data using polynomial kernel which have:
gamma, C, r, d.
svmtrain only has boxConstraint (C) and Polyorder (d)
so i have to declare function by my self using @kfun
i've tried many times but still got "*Function definitions are not permitted in this context.*"
where i must put this code?
function K = kfun(U,V,gamma,r)
K = gamma*(U*V')+r;
in command line and in .m script file I still got error like that
anybody can help me?
data = randn(100,10); groups = rand(100,1)>0.5; g = 1; r = 1; svmstruct = svmtrain(data, groups, ... 'Kernel_Function',@(U,V) g*(U*V')+r,'BoxConstraint', 0.2);
(note that 'gamma' is pre-defined function, therefore you should better use another variable name)