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"""TODO(wikitext): Add a description here."""
import os
import datasets
_CITATION = """\
@misc{merity2016pointer,
title={Pointer Sentinel Mixture Models},
author={Stephen Merity and Caiming Xiong and James Bradbury and Richard Socher},
year={2016},
eprint={1609.07843},
archivePrefix={arXiv},
primaryClass={cs.CL}
}
"""
_DESCRIPTION = """\
The WikiText language modeling dataset is a collection of over 100 million tokens extracted from the set of verified
Good and Featured articles on Wikipedia. The dataset is available under the Creative Commons Attribution-ShareAlike
License.
"""
_HOMEPAGE = "https://blog.einstein.ai/the-wikitext-long-term-dependency-language-modeling-dataset/"
_LICENSE = "Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)"
_DATA_URL = "https://s3.amazonaws.com/research.metamind.io/wikitext"
class WikitextConfig(datasets.BuilderConfig):
"""BuilderConfig for GLUE."""
def __init__(self, data_url, **kwargs):
"""BuilderConfig for Wikitext
Args:
data_url: `string`, url to the dataset (word or raw level)
**kwargs: keyword arguments forwarded to super.
"""
super(WikitextConfig, self).__init__(
version=datasets.Version(
"1.0.0",
),
**kwargs,
)
self.data_url = data_url
class Wikitext(datasets.GeneratorBasedBuilder):
"""TODO(wikitext_103): Short description of my dataset."""
# TODO(wikitext_103): Set up version.
VERSION = datasets.Version("0.1.0")
BUILDER_CONFIGS = [
WikitextConfig(
name="wikitext-103-v1",
data_url=_DATA_URL + "/" + "wikitext-103-v1.zip",
description="Word level dataset. No processing is needed other than replacing newlines with <eos> tokens.",
),
WikitextConfig(
name="wikitext-2-v1",
data_url=_DATA_URL + "/" + "wikitext-2-v1.zip",
description="Word level dataset. No processing is needed other than replacing newlines with <eos> tokens.",
),
WikitextConfig(
name="wikitext-103-raw-v1",
data_url=_DATA_URL + "/" + "wikitext-103-raw-v1.zip",
description="Raw level dataset: the raw tokens before the addition of <unk> tokens. "
"They should only be used for character level work or for creating newly derived datasets.",
),
WikitextConfig(
name="wikitext-2-raw-v1",
data_url=_DATA_URL + "/" + "wikitext-2-raw-v1.zip",
description="Raw level dataset: the raw tokens before the addition of <unk> tokens. "
"They should only be used for character level work or for creating newly derived datasets.",
),
]
def _info(self):
# TODO(wikitext): Specifies the datasets.DatasetInfo object
return datasets.DatasetInfo(
# This is the description that will appear on the datasets page.
description=_DESCRIPTION,
# datasets.features.FeatureConnectors
features=datasets.Features(
{
"text": datasets.Value("string")
# These are the features of your dataset like images, labels ...
}
),
# If there's a common (input, target) tuple from the features,
# specify them here. They'll be used if as_supervised=True in
# builder.as_dataset.
supervised_keys=None,
homepage=_HOMEPAGE,
license=_LICENSE,
citation=_CITATION,
)
def _split_generators(self, dl_manager):
"""Returns SplitGenerators."""
# TODO(wikitext): Downloads the data and defines the splits
# dl_manager is a datasets.download.DownloadManager that can be used to
# download and extract URLs
if self.config.name == "wikitext-103-v1":
data_file = dl_manager.download_and_extract(self.config.data_url)
data_dir = os.path.join(data_file, "wikitext-103")
return [
datasets.SplitGenerator(
name=datasets.Split.TEST,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.test.tokens"), "split": "test"},
),
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.train.tokens"), "split": "train"},
),
datasets.SplitGenerator(
name=datasets.Split.VALIDATION,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.valid.tokens"), "split": "valid"},
),
]
else:
if self.config.name == "wikitext-103-raw-v1":
data_file = dl_manager.download_and_extract(self.config.data_url)
data_dir = os.path.join(data_file, "wikitext-103-raw")
return [
datasets.SplitGenerator(
name=datasets.Split.TEST,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.test.raw"), "split": "test"},
),
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.train.raw"), "split": "train"},
),
datasets.SplitGenerator(
name=datasets.Split.VALIDATION,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.valid.raw"), "split": "valid"},
),
]
else:
if self.config.name == "wikitext-2-raw-v1":
data_file = dl_manager.download_and_extract(self.config.data_url)
data_dir = os.path.join(data_file, "wikitext-2-raw")
return [
datasets.SplitGenerator(
name=datasets.Split.TEST,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.test.raw"), "split": "test"},
),
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.train.raw"), "split": "train"},
),
datasets.SplitGenerator(
name=datasets.Split.VALIDATION,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.valid.raw"), "split": "valid"},
),
]
else:
if self.config.name == "wikitext-2-v1":
data_file = dl_manager.download_and_extract(self.config.data_url)
data_dir = os.path.join(data_file, "wikitext-2")
return [
datasets.SplitGenerator(
name=datasets.Split.TEST,
gen_kwargs={"data_file": os.path.join(data_dir, "wiki.test.tokens"), "split": "test"},
),
datasets.SplitGenerator(
name=datasets.Split.TRAIN,
gen_kwargs={
"data_file": os.path.join(data_dir, "wiki.train.tokens"),
"split": "train",
},
),
datasets.SplitGenerator(
name=datasets.Split.VALIDATION,
gen_kwargs={
"data_file": os.path.join(data_dir, "wiki.valid.tokens"),
"split": "valid",
},
),
]
def _generate_examples(self, data_file, split):
"""Yields examples."""
# TODO(wikitext): Yields (key, example) tuples from the dataset
with open(data_file, encoding="utf-8") as f:
for idx, row in enumerate(f):
if row.strip():
yield idx, {"text": row}
else:
yield idx, {"text": ""}
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