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Browse files- tiny_shakespeare.py +0 -110
tiny_shakespeare.py
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# coding=utf-8
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# Copyright 2020 The TensorFlow Datasets Authors and the HuggingFace Datasets Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Lint as: python3
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"""Tiny Shakespeare dataset."""
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import os
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import datasets
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_CITATION = """\
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@misc{
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author={Karpathy, Andrej},
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title={char-rnn},
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year={2015},
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howpublished={\\url{https://github.com/karpathy/char-rnn}}
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}"""
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_DESCRIPTION = """\
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40,000 lines of Shakespeare from a variety of Shakespeare's plays. \
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Featured in Andrej Karpathy's blog post 'The Unreasonable Effectiveness of \
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Recurrent Neural Networks': \
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http://karpathy.github.io/2015/05/21/rnn-effectiveness/.
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To use for e.g. character modelling:
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```
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d = datasets.load_dataset(name='tiny_shakespeare')['train']
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d = d.map(lambda x: datasets.Value('strings').unicode_split(x['text'], 'UTF-8'))
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# train split includes vocabulary for other splits
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vocabulary = sorted(set(next(iter(d)).numpy()))
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d = d.map(lambda x: {'cur_char': x[:-1], 'next_char': x[1:]})
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d = d.unbatch()
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seq_len = 100
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batch_size = 2
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d = d.batch(seq_len)
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d = d.batch(batch_size)
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```
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"""
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class TinyShakespeare(datasets.GeneratorBasedBuilder):
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"""Tiny Shakespeare dataset builder."""
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VERSION = datasets.Version("1.0.0")
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def _info(self):
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return datasets.DatasetInfo(
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description=_DESCRIPTION,
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features=datasets.Features({"text": datasets.Value("string")}),
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supervised_keys=None,
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homepage="https://github.com/karpathy/char-rnn/blob/master/data/tinyshakespeare/input.txt",
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citation=_CITATION,
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)
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def _split_generators(self, dl_manager):
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"""Returns SplitGenerators."""
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download_path = dl_manager.download_and_extract(
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"https://raw.githubusercontent.com/karpathy/char-rnn/master/data/tinyshakespeare/input.txt"
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)
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if os.path.isdir(download_path):
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# During testing the download manager mock gives us a directory
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txt_path = os.path.join(download_path, "input.txt")
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else:
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txt_path = download_path
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with open(txt_path, "r", encoding="utf-8") as f:
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text = f.read()
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# 90/5/5 split
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i = int(len(text) * 0.9)
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train_text, text = text[:i], text[i:]
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i = int(len(text) * 0.5)
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validation_text, text = text[:i], text[i:]
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test_text = text
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return [
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datasets.SplitGenerator(
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name=datasets.Split.TRAIN,
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# These kwargs will be passed to _generate_examples
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gen_kwargs={"split_key": "train", "split_text": train_text},
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),
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datasets.SplitGenerator(
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name=datasets.Split.VALIDATION,
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gen_kwargs={"split_key": "validation", "split_text": validation_text},
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),
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datasets.SplitGenerator(
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name=datasets.Split.TEST,
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gen_kwargs={"split_key": "test", "split_text": test_text},
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),
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]
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def _generate_examples(self, split_key, split_text):
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"""Yields examples."""
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data_key = split_key # Should uniquely identify the thing yielded
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feature_dict = {"text": split_text}
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yield data_key, feature_dict
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