[R] Fast way to find argmax of a radial basis function? (optimization problem). • r/MachineLearning

I'm working on a continuous state and action Q-learning algorithm, using radial basis nets to store the value function. It works OK, but I'm not completely happy with the way I'm doing the argmax to get the action. Basically I have a radial basis function and I have to find maximum. The function looks like this more or less. Things I've tried so far: Not that fast either, and prone to stuck in local maximum.