nutszebra_optimizer.py 文件源码

def __init__(self, model=None, lr=0.02, momentum=0.9, schedule=(200, 300, 350, 375), weight_decay=1.0e-4):
        super(OptimizerFractalNet, self).__init__(model)
        self.lr = lr
        self.momentum = momentum
        self.schedule = schedule
        all_links = OptimizerFractalNet._find(model)
        optimizer_set = []
        for link in all_links:
            wd = chainer.optimizer.WeightDecay(weight_decay)
            optimizer = optimizers.MomentumSGD(lr, momentum)
            optimizer.setup(link[0])
            optimizer.add_hook(wd)
            optimizer_set.append(optimizer)
        self.optimizer_set = optimizer_set
        self.all_links = all_links
        self.flag = False