Method update

util/utils.py:478–481

(self, model)

                ema_v.copy_(update_fn(ema_v, model_v))

    def update(self, model):
        self._update(model,
                     update_fn=lambda e, m: self.decay * e +
                     (1. - self.decay) * m)

    def set(self, model):
        self._update(model, update_fn=lambda e, m: m)