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import csv
import json
import datasets
from datasets.tasks import TextClassification
_CITATION = """\
@inproceedings{heindorf2020causenet,
author = {Stefan Heindorf and
Yan Scholten and
Henning Wachsmuth and
Axel-Cyrille Ngonga Ngomo and
Martin Potthast},
title = CauseNet: Towards a Causality Graph Extracted from the Web,
booktitle = CIKM,
publisher = ACM,
year = 2020
}
"""
_DESCRIPTION = """\
Crawled Wikipedia Data from CIKM 2020 paper
'CauseNet: Towards a Causality Graph Extracted from the Web.'
"""
_URL = "https://github.com/causenet-org/CIKM-20"
# use dl=1 to force browser to download data instead of displaying it
_TRAIN_DOWNLOAD_URL = "https://groups.uni-paderborn.de/wdqa/causenet/causality-graphs/extraction/wikipedia/wikipedia-extraction.tsv"
class CauseNetWikiCorpus(datasets.GeneratorBasedBuilder):
def _info(self):
return datasets.DatasetInfo(
description=_DESCRIPTION,
features=datasets.Features({
"cause_word": datasets.Value("string"),
"cause_id": datasets.Value("int64"),
"effect_word": datasets.Value("string"),
"effect_id": datasets.Value("int64"),
"pattern": datasets.Value("string"),
"sentence": datasets.Value("string"),
"dependencies": datasets.Value("string")
}
),
homepage=_URL,
citation=_CITATION,
task_templates=None
)
def _split_generators(self, dl_manager):
"""Returns SplitGenerators."""
train_path = dl_manager.download_and_extract(_TRAIN_DOWNLOAD_URL)
return [
datasets.SplitGenerator(name=datasets.Split.TRAIN, gen_kwargs={"filepath": train_path})
]
def is_valid_article(self, title):
forbidden_title_parts = ['Wikipedia:', 'Template:', 'File:',
'Portal:', 'Category:', 'Draft:',
'List of', 'disambiguation']
contains_forbidden_title_part = False
for forbidden_title_part in forbidden_title_parts:
if forbidden_title_part in title:
contains_forbidden_title_part = True
break
return not contains_forbidden_title_part
def _generate_examples(self, filepath):
"""
Generate examples.
We are reading csv files with the following columns: sentenceID | gold_label | sentence.
"""
for id_, line in enumerate(open(filepath, encoding="utf-8")):
parts = line.strip().split('\t')
if parts[0] != 'wikipedia_sentence':
continue
assert len(parts) == 11
if not self.is_valid_article(parts[2]):
continue
for match in json.loads(parts[10]):
sentence_data = {
"cause_word": match['Cause'][0],
"cause_id": match['Cause'][1],
"effect_word": match['Effect'][0],
"effect_id": match['Effect'][1],
"pattern": match['Pattern'],
"sentence": json.loads(parts[7]),
"dependencies": json.loads(parts[9])
}
yield id_, sentence_data |