About the sigma parameter in your code implementation

[zhao-yiqun]

Hi Biao,

I found that in your code there is a sigma parameter sigma. I saw that in the loss function, you decay it to zeros, I don't know what is the purpose of setting this. Could you please give me some feedbacks?

Thanks in advance.

[1zb]

Hi Yiqun,

The sigma here is the "inverse sigma" in Gaussian kernel (sorry for the wrong symbol) https://en.wikipedia.org/wiki/Radial_basis_function_kernel

The sigma controls the smoothness of interpolated features (the smaller, the smoother).

[zhao-yiqun]

Thanks !