Datasets:

joelniklaus
/

MultiLegalPile_Wikipedia_Filtered

	"""MultiLegalPile Wikipedia Filtered"""

	import json

	import datasets
	from huggingface_hub.file_download import hf_hub_url

	try:
	import lzma as xz
	except ImportError:
	import pylzma as xz

	datasets.logging.set_verbosity_info()
	logger = datasets.logging.get_logger(__name__)

	_CITATION = """
	"""

	_DESCRIPTION = """
	A filtered version of the MultiLegalPile dataset, together with wikipedia articles.
	"""

	_URL = "https://huggingface.co/datasets/joelito/MultiLegalPile_Wikipedia_Filtered"

	_LANGUAGES = ["bg", "cs", "da", "de", "el", "en", "es", "et", "fi", "fr", "ga", "hr",
	"hu", "it", "lt", "lv", "mt", "nl", "pl", "pt", "ro", "sk", "sl", "sv"]

	_TYPES = ["caselaw", "contracts", "legislation", "other", "wikipedia"]

	_JURISDICTONS = ["Austria", "Belgium", "Bulgaria", "Croatia", "Czechia", "Denmark", "Estonia", "Finland",
	"France", "Germany", "Greece", "Hungary", "Ireland", "Italy", "Latvia", "Lithuania", "Luxembourg",
	"Malta", "Netherlands", "Poland", "Portugal", "Romania", "Slovakia", "Slovenia", "Spain", "Sweden",
	"EU", "Switzerland", "UK", "US", "Canada", "N/A"]

	# IMPORTANT: Increase this once larger datasets are available (en_caselaw has 11 at the moment)
	_HIGHEST_NUMBER_OF_SHARDS = 11


	class MultiLegalPileWikipediaFilteredConfig(datasets.BuilderConfig):
	"""BuilderConfig for MultiLegalPileWikipediaFiltered."""

	def __init__(self, name: str, **kwargs):
	"""BuilderConfig for MultiLegalPileWikipediaFiltered.
	Args:
	name: combination of language and type with _
	language: One of bg,cs,da,de,el,en,es,et,fi,fr,ga,hr,hu,it,lt,lv,mt,nl,pl,pt,ro,sk,sl,sv or all
	type: One of caselaw,contracts,legislation,other,wikipedia or all
	**kwargs: keyword arguments forwarded to super.
	"""
	super(MultiLegalPileWikipediaFilteredConfig, self).__init__(**kwargs)
	self.name = name
	self.language = name.split("_")[0]
	self.type = name.split("_")[1]


	class MultiLegalPileWikipediaFiltered(datasets.GeneratorBasedBuilder):
	"""
	MultiLegalPileWikipediaFiltered:
	A filtered dataset of multilingual legal data and wikipedias in the EU languages
	"""
	BUILDER_CONFIG_CLASS = MultiLegalPileWikipediaFilteredConfig

	BUILDER_CONFIGS = [MultiLegalPileWikipediaFilteredConfig(f"{language}_{type}")
	for type in _TYPES + ["all"]
	for language in _LANGUAGES + ["all"]]

	def _info(self):
	return datasets.DatasetInfo(
	description=_DESCRIPTION,
	features=datasets.Features(
	{
	"language": datasets.Value("string"), # one of _LANGUAGES
	"type": datasets.Value("string"), # one of _TYPES
	"jurisdiction": datasets.Value("string"), # one of _JURISDICTONS
	"text": datasets.Value("string"),
	}
	),
	supervised_keys=None,
	homepage=_URL,
	citation=_CITATION,
	)

	def _split_generators(self, dl_manager):
	def download_url(file_name):
	url = hf_hub_url(repo_id="joelito/MultiLegalPile_Wikipedia_Filtered",
	filename=f"data/{file_name}.jsonl.xz", repo_type="dataset")
	return dl_manager.download(url)

	languages = _LANGUAGES if self.config.language == "all" else [self.config.language]
	types = _TYPES if self.config.type == "all" else [self.config.type]

	split_generators = []
	for split in [datasets.Split.TRAIN, datasets.Split.VALIDATION]:
	filepaths = []
	for language in languages:
	for type in types:
	for shard in range(_HIGHEST_NUMBER_OF_SHARDS):
	try:
	filepaths.append(download_url(f"{language}_{type}_{split}_{shard}"))
	except:
	break # we found the last shard
	split_generators.append(
	datasets.SplitGenerator(name=split, gen_kwargs={"filepaths": filepaths})
	)
	return split_generators

	def _generate_examples(self, filepaths):
	"""This function returns the examples in the raw (text) form by iterating on all the files."""
	id_ = 0
	for filepath in filepaths:
	logger.info("Generating examples from = %s", filepath)
	try:
	with xz.open(open(filepath, "rb"), "rt", encoding="utf-8") as f:
	for line in f:
	if line:
	example = json.loads(line)
	if example is not None and isinstance(example, dict):
	yield id_, example
	id_ += 1
	except Exception:
	logger.exception("Error while processing file %s", filepath)