RadialBasisFunction.md (637B)
1 # Radial Basis Function (RBF) 2 3 ML CH2 4 5 **Definition:** A radial basis function is a function whose values depend only on the distance between the input and some fixed point. 6 7 The kernel can be represented by the equation such that the position is equal to the distance between the input and center point, squared, divided by 2L^2, and then taking the negative natural exponential (e raised to the input). In this example, L is some hyperparameter that affects the rate at which the graph will go from 1 to near 0. 8 9 Additionally, the lowest value for these functions is generally 0 while the highest is 1 (meaning the exact position).