brainpy.math.surrogate.NonzeroSignLog# class brainpy.math.surrogate.NonzeroSignLog(alpha=1.0)[source]# Judge spiking state with a nonzero sign log function. See also nonzero_sign_log __init__(alpha=1.0)[source]# Methods __init__([alpha]) surrogate_fun(x) The surrogate function. surrogate_grad(x) The gradient function of the surrogate function.