Datasets:

difraud
/

difraud

	import csv
	import json
	import os
	import sys
	import datasets
	from datasets.tasks import TextClassification


	# TODO: Add BibTeX citation
	_CITATION = """
	TODO: Add citation here
	"""

	_DESCRIPTION = """
	DIFrauD -- (Domain Independent Fraud Detection) is a corpus of deceptive and truthful texts from 7 domains:

	"fake_news",
	"job_scams",
	"phishing",
	"political_statements",
	"product_reviews",
	"sms",
	"twitter_rumours"

	To load a specific domain, pass it as the "name" parameter to load_dataset()
	"""

	class DIFrauD(datasets.GeneratorBasedBuilder):
	"""Domain Independent Fraud Detection benchmarks -- a Large multi-domain english corpus of truthful and deceptive texts"""

	BUILDER_CONFIGS = [
	datasets.BuilderConfig(name="fake_news", description="Fake News domain"),
	datasets.BuilderConfig(name="job_scams", description="Online Job Scams"),
	datasets.BuilderConfig(name="phishing", description="Email phishing attacks"),
	datasets.BuilderConfig(name="political_statements", description="Statements by various politicians"),
	datasets.BuilderConfig(name="product_reviews", description="Amazon product reviews"),
	datasets.BuilderConfig(name="sms", description="SMS spam and phishing attacks"),
	datasets.BuilderConfig(name="twitter_rumours",
	description="Collection of rumours from twitter spanning several years and topics"),
	]

	DEFAULT_CONFIG_NAME = "phishing"

	def _info(self):
	self.features = datasets.Features(
	{
	"text": datasets.Value("string"),
	"label": datasets.ClassLabel(num_classes=2, names=['non-deceptive', 'deceptive']),
	}
	)
	return datasets.DatasetInfo(
	config_name=self.config.name,
	# This is the description that will appear on the datasets page.
	description=_DESCRIPTION,
	# This defines the different columns of the dataset and their types
	features=self.features, # Here we define them above because they are different between the two configurations
	# If there's a common (input, target) tuple from the features, uncomment supervised_keys line below and
	# specify them. They'll be used if as_supervised=True in builder.as_dataset.
	supervised_keys=("text", "label"),
	# specify standard binary classification task for datasets to setup easier
	task_templates=[TextClassification(text_column="text", label_column="label")],
	# Homepage of the dataset for documentation
	# homepage=_HOMEPAGE,
	# License for the dataset if available
	# license=_LICENSE,
	# Citation for the dataset
	citation=_CITATION,
	)

	def _split_generators(self, dl_manager):
	# TODO: This method is tasked with downloading/extracting the data and defining the splits depending on the configuration
	# If several configurations are possible (listed in BUILDER_CONFIGS), the configuration selected by the user is in self.config.name

	# dl_manager is a datasets.download.DownloadManager that can be used to download and extract URLS
	# It can accept any type or nested list/dict and will give back the same structure with the url replaced with path to local files.
	# By default the archives will be extracted and a path to a cached folder where they are extracted is returned instead of the archive
	urls = {
	"train": self.config.name+"/train.jsonl",
	"test": self.config.name+"/test.jsonl",
	"validation": self.config.name+"/validation.jsonl",
	}
	data_dir = dl_manager.download_and_extract(urls)

	return [
	datasets.SplitGenerator(
	name=datasets.Split.TRAIN,
	# These kwargs will be passed to _generate_examples
	gen_kwargs={
	"filepath": os.path.join(data_dir['train']),
	"split": "train",
	},
	),
	datasets.SplitGenerator(
	name=datasets.Split.VALIDATION,
	gen_kwargs={
	"filepath": os.path.join(data_dir['validation']),
	"split": "validation",
	},
	),
	datasets.SplitGenerator(
	name=datasets.Split.TEST,
	gen_kwargs={
	"filepath": os.path.join(data_dir['test']),
	"split": "test"
	},
	),
	]

	# method parameters are unpacked from `gen_kwargs` as given in `_split_generators`
	def _generate_examples(self, filepath, split):
	# This method handles input defined in _split_generators to yield (key, example) tuples from the dataset.
	# The `key` is for legacy reasons (tfds) and is not important in itself, but must be unique for each example.
	with open(filepath, encoding="utf-8") as f:
	for key, row in enumerate(f):
	data = json.loads(row)
	yield key, {
	"text": data["text"],
	"label": int(data["label"]),
	}