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kilt_wikipedia / kilt_wikipedia.py

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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
	"""Wikipedia knowledge source for KILT"""


	import json

	import datasets


	logger = datasets.logging.get_logger(__name__)


	_CITATION = """\
	@inproceedings{fb_kilt,
	author = {Fabio Petroni and
	Aleksandra Piktus and
	Angela Fan and
	Patrick Lewis and
	Majid Yazdani and
	Nicola De Cao and
	James Thorne and
	Yacine Jernite and
	Vassilis Plachouras and
	Tim Rockt\"aschel and
	Sebastian Riedel},
	title = {{KILT:} a {B}enchmark for {K}nowledge {I}ntensive {L}anguage {T}asks},
	journal = {CoRR},
	archivePrefix = {arXiv},
	year = {2020},
	"""

	_DESCRIPTION = """\
	KILT-Wikipedia: Wikipedia pre-processed for KILT.
	"""


	class KILTWikipediaConfig(datasets.BuilderConfig):
	"""BuilderConfig for KILTWikipedia."""

	def __init__(self, **kwargs):
	"""BuilderConfig for KILTWikipedia.

	Args:
	.
	**kwargs: keyword arguments forwarded to super.
	"""
	super(KILTWikipediaConfig, self).__init__(
	version=datasets.Version("1.0.0", "Wikipedia pre-processed for KILT"), **kwargs
	)


	class KILTWikipedia(datasets.GeneratorBasedBuilder):
	"""KILTWikipedia: Wikipedia pre-processed for KILT. Version 1.0."""

	BUILDER_CONFIGS = [
	KILTWikipediaConfig(
	name="2019-08-01",
	description="Wikipedia pre-processed for KILT from 2019/08/01 dump",
	),
	]

	def _info(self):
	return datasets.DatasetInfo(
	description=_DESCRIPTION,
	features=datasets.Features(
	{
	"kilt_id": datasets.Value("string"),
	"wikipedia_id": datasets.Value("string"),
	"wikipedia_title": datasets.Value("string"),
	"text": datasets.features.Sequence({"paragraph": datasets.Value("string")}),
	"anchors": datasets.features.Sequence(
	{
	"paragraph_id": datasets.Value("int32"),
	"start": datasets.Value("int32"),
	"end": datasets.Value("int32"),
	"text": datasets.Value("string"),
	"href": datasets.Value("string"),
	"wikipedia_title": datasets.Value("string"),
	"wikipedia_id": datasets.Value("string"),
	}
	),
	"categories": datasets.Value("string"),
	"wikidata_info": datasets.Features(
	{
	"description": datasets.Value("string"),
	"enwikiquote_title": datasets.Value("string"),
	"wikidata_id": datasets.Value("string"),
	"wikidata_label": datasets.Value("string"),
	"wikipedia_title": datasets.Value("string"),
	"aliases": datasets.features.Sequence({"alias": datasets.Value("string")}),
	}
	),
	"history": datasets.Features(
	{
	"pageid": datasets.Value("int32"),
	"parentid": datasets.Value("int32"),
	"revid": datasets.Value("int32"),
	"pre_dump": datasets.Value("bool"),
	"timestamp": datasets.Value("string"),
	"url": datasets.Value("string"),
	}
	),
	}
	),
	# No default supervised_keys (as we have to pass both premise
	# and hypothesis as input).
	supervised_keys=None,
	homepage="https://github.com/facebookresearch/KILT",
	citation=_CITATION,
	)

	def _split_generators(self, dl_manager):

	downloaded_path = dl_manager.download_and_extract(
	"http://dl.fbaipublicfiles.com/KILT/kilt_knowledgesource.json"
	)

	return [
	datasets.SplitGenerator(name="full", gen_kwargs={"filepath": downloaded_path}),
	]

	def _generate_examples(self, filepath):
	"""Generate Wikipedia articles for KILT.

	Args:
	filepath: a string

	Yields:
	dictionaries representing article data and metadata
	"""
	logger.info("generating examples from = %s", filepath)
	with open(filepath, encoding="utf-8") as f:
	for idx, line in enumerate(f):
	pre_article = json.loads(line.strip())
	article = dict([(k, pre_article[k]) for k in ["wikipedia_id", "wikipedia_title", "categories"]])
	# wikidata
	article["wikidata_info"] = {}
	pre_article["wikidata_info"] = pre_article.get("wikidata_info", {})
	if pre_article["wikidata_info"].get("aliases", None) is None:
	pre_article["wikidata_info"]["aliases"] = []
	for k in ["description", "enwikiquote_title", "wikidata_id", "wikidata_label", "wikipedia_title"]:
	val = pre_article["wikidata_info"].get(k, None)
	article["wikidata_info"][k] = "" if val is None else val
	article["wikidata_info"]["aliases"] = {"alias": pre_article["wikidata_info"]["aliases"]}
	# history
	article["history"] = {}
	pre_article["history"] = pre_article.get("history", {})
	pre_dump = pre_article["history"].get("pre_dump", None)
	article["history"]["pre_dump"] = False if pre_dump is None else pre_dump
	for k in ["pageid", "parentid", "revid"]:
	val = pre_article["history"].get(k, None)
	article["history"][k] = -1 if val is None else val
	for k in ["timestamp", "url"]:
	val = pre_article["history"].get(k, None)
	article["history"][k] = "" if val is None else val
	# everything else
	article["kilt_id"] = pre_article["_id"]
	article["text"] = {"paragraph": pre_article["text"]}
	article["anchors"] = {}
	for k in ["paragraph_id", "start", "end", "text", "href", "wikipedia_title", "wikipedia_id"]:
	article["anchors"][k] = [anchor.get(k, "") for anchor in pre_article["anchors"]]
	yield idx, article