RBF Types
Commonly used types of radial basis functions include (writing ):
- Gaussian:
The first term, that is used for normalisation of the Gaussian, is missing, because in our sum every Gaussian has a weight, so the normalisation is not necessary.
- Multiquadric:
- Inverse quadratic:
- Inverse multiquadric:
- Polyharmonic spline:
- Thin plate spline (a special polyharmonic spline):
Read more about this topic: Radial Basis Function
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