实现简单的straight-through estimator(STE)(pytorch版)
tensor([-0.4608, 0.0240, 0.5585, -0.7694], requires_grad=True)tensor([0., 0. ...
tensor([-0.4608, 0.0240, 0.5585, -0.7694], requires_grad=True)tensor([0., 0. ...