pytorch_data_teacher.py 文件源码

python
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项目:ParlAI 作者: facebookresearch 项目源码 文件源码
def __init__(self, opt, shared=None):
        opt['batch_sort'] = False
        super().__init__(opt, shared)
        self.use_batch_act = self.bsz > 1
        self.num_workers = opt['numworkers']
        # One can specify a collate function to use for preparing a batch
        collate_fn = opt.get('collate_fn', default_collate)
        if not shared:
            self.dataset = StreamDataset(opt)
            self.pytorch_dataloader = DataLoader(
                self.dataset,
                batch_size=self.bsz,
                shuffle=False,
                sampler=sampler.SequentialSampler(self.dataset),
                num_workers=self.num_workers,
                collate_fn=collate_fn,
                pin_memory=False,
                drop_last=False,
                )
            self.lastYs = [None] * self.bsz
        else:
            self.dataset = shared['dataset']
            self.pytorch_dataloader = shared['pytorch_dataloader']
            self.lastYs = shared['lastYs']

        self.num_batches = math.ceil(self.dataset.num_examples()/self.bsz)
        self.reset()
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