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Computing the values of Gaussian kernel functions.
kerGauss(gamma, z1, z2)
A number, the value of the Gaussian kernel function.
A number, the bandwidth parameter in the Gaussian kernel.
A vector, the first input of the Gaussian kernel.
A vector, the second input of the Gaussian kernel.
The Gaussian kernel is defined as k(z1,z2)=exp(-gamma*||z1-z2||^2).
gamma=0.02 z1=c(3,1,3) z2=c(8,1,9) kerGauss(gamma,z1,z2)
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