rmsprop_graves.py 文件源码

def update_one_gpu(self, param, state):
        cuda.elementwise(
            'T grad, T lr, T alpha, T momentum, T eps',
            'T param, T avg_n, T avg_g, T delta',
            '''avg_n = alpha * avg_n + (1 - alpha) * grad * grad;
               avg_g = alpha * avg_g + (1 - alpha) * grad;
               delta = delta * momentum -
                   lr * grad * rsqrt(avg_n - avg_g * avg_g + eps);
               param += delta;''',
            'rmsprop_graves')(
                param.grad, self.lr, self.alpha, self.momentum, self.eps,
                param.data, state['n'], state['g'], state['delta'])