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# coding=utf-8
# Copyright 2020 The TensorFlow Datasets Authors and the HuggingFace Datasets Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Lint as: python3
"""IMDB movie reviews dataset."""
import datasets
_DESCRIPTION = """
"""
_CITATION = """
"""
_DOWNLOAD_URL = "aclImdb_v1.tar.gz"
class IMDBReviewsConfig(datasets.BuilderConfig):
"""BuilderConfig for IMDBReviews."""
def __init__(self, **kwargs):
"""BuilderConfig for IMDBReviews.
Args:
**kwargs: keyword arguments forwarded to super.
"""
super(IMDBReviewsConfig, self).__init__(version=datasets.Version("1.0.0", ""), **kwargs)
class Imdb(datasets.GeneratorBasedBuilder):
"""IMDB movie reviews dataset."""
BUILDER_CONFIGS = [
IMDBReviewsConfig(
name="plain_text",
description="Plain text",
)
]
def _info(self):
return datasets.DatasetInfo(
description=_DESCRIPTION,
features=datasets.Features(
{"text": datasets.Value("string"), "label": datasets.features.ClassLabel(names=["neg", "pos"])}
),
supervised_keys=None,
homepage="http://ai.stanford.edu/~amaas/data/sentiment/",
citation=_CITATION,
)
def _split_generators(self, dl_manager):
archive = dl_manager.download(_DOWNLOAD_URL)
return [
datasets.SplitGenerator(
name=datasets.Split.TRAIN, gen_kwargs={"files": dl_manager.iter_archive(archive), "split": "train"}
),
datasets.SplitGenerator(
name=datasets.Split.TEST, gen_kwargs={"files": dl_manager.iter_archive(archive), "split": "test"}
),
datasets.SplitGenerator(
name=datasets.Split("unsupervised"),
gen_kwargs={"files": dl_manager.iter_archive(archive), "split": "train", "labeled": False},
),
]
def _generate_examples(self, files, split, labeled=True):
"""Generate aclImdb examples."""
# For labeled examples, extract the label from the path.
if labeled:
label_mapping = {"pos": 1, "neg": 0}
for path, f in files:
if path.startswith(f"aclImdb/{split}"):
label = label_mapping.get(path.split("/")[2])
if label is not None:
yield path, {"text": f.read().decode("utf-8"), "label": label}
else:
for path, f in files:
if path.startswith(f"aclImdb/{split}"):
if path.split("/")[2] == "unsup":
yield path, {"text": f.read().decode("utf-8"), "label": -1}
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