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https://github.com/SillyTavern/SillyTavern-Extras.git
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42 lines
1.0 KiB
Python
42 lines
1.0 KiB
Python
# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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import numpy as np
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import torch
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from . import BaseWrapperDataset
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class AppendTokenDataset(BaseWrapperDataset):
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def __init__(self, dataset, token=None):
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super().__init__(dataset)
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self.token = token
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if token is not None:
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self._sizes = np.array(dataset.sizes) + 1
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else:
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self._sizes = dataset.sizes
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def __getitem__(self, idx):
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item = self.dataset[idx]
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if self.token is not None:
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item = torch.cat([item, item.new([self.token])])
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return item
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@property
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def sizes(self):
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return self._sizes
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def num_tokens(self, index):
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n = self.dataset.num_tokens(index)
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if self.token is not None:
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n += 1
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return n
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def size(self, index):
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n = self.dataset.size(index)
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if self.token is not None:
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n += 1
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return n
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