A common algorithm used in Spiking Neural Networks is called STDP (Stochastic Timing Dependent Plasticity). I do not know what exactly brainchip uses though. It

A common algorithm used in Spiking Neural Networks is called STDP (Stochastic Timing Dependent Plasticity). I do not know what exactly brainchip uses though. It is also possible to gradient descent your way through some SNNs although this is very inefficient. Also it is possible to directly convert many CNN architectures to equivalent spiking architectures. (i.e. Learn a CNN using gradient descent then approximate it as an SNN).