nutszebra_optimizer.py 文件源码

def __init__(self, model=None, schedule=(int(32000. / (50000. / 128)), int(48000. / (50000. / 128))), lr=0.1, momentum=0.9, weight_decay=1.0e-4, warm_up_lr=0.01):
        super(OptimizerResnet, self).__init__(model)
        optimizer = optimizers.MomentumSGD(warm_up_lr, momentum)
        weight_decay = chainer.optimizer.WeightDecay(weight_decay)
        optimizer.setup(self.model)
        optimizer.add_hook(weight_decay)
        self.optimizer = optimizer
        self.schedule = schedule
        self.lr = lr
        self.warmup_lr = warm_up_lr
        self.momentum = momentum
        self.weight_decay = weight_decay