example_support.py 文件源码

def q_loss(self, y_true, y_pred):
        # assume clip_delta is 1.0
        # along with sum accumulator.
        diff = y_true - y_pred
        _quad = T.minimum(abs(diff), 1.0)
        _lin = abs(diff) - _quad
        loss = 0.5 * _quad ** 2 + _lin
        loss = T.sum(loss)

        return loss