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"""XNLI: The Cross-Lingual NLI Corpus.""" |
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import collections |
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import csv |
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import os |
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from contextlib import ExitStack |
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import datasets |
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_CITATION = """\ |
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# @InProceedings{conneau2018xnli, |
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# author = {Conneau, Alexis |
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# and Rinott, Ruty |
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# and Lample, Guillaume |
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# and Williams, Adina |
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# and Bowman, Samuel R. |
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# and Schwenk, Holger |
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# and Stoyanov, Veselin}, |
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# title = {XNLI: Evaluating Cross-lingual Sentence Representations}, |
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# booktitle = {Proceedings of the 2018 Conference on Empirical Methods |
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# in Natural Language Processing}, |
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# year = {2018}, |
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# publisher = {Association for Computational Linguistics}, |
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# location = {Brussels, Belgium}, |
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# }""" |
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_DESCRIPTION = """\ |
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XNLI is a subset of a few thousand examples from MNLI which has been translated |
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into a 14 different languages (some low-ish resource). As with MNLI, the goal is |
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to predict textual entailment (does sentence A imply/contradict/neither sentence |
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B) and is a classification task (given two sentences, predict one of three |
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labels). |
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""" |
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_TRAIN_DATA_URL = "https://gmuedu-my.sharepoint.com/:u:/g/personal/ffaisal_gmu_edu/EVJ2LyvweSVJpUFvTMkKiKsB9P7DDr0T4ZL7EPFahruyow?download=1" |
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_TEST_DATA_URL = "https://gmuedu-my.sharepoint.com/:u:/g/personal/ffaisal_gmu_edu/ERNIHGKDoYZNi5mj5HIQbaMB7mWr4s1z3iVq35pbUeBjEg?download=1" |
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_VAL_DATA_URL = "https://gmuedu-my.sharepoint.com/:u:/g/personal/ffaisal_gmu_edu/EWqXGwiQwwpEup1xMmoRRvUBpj675UlDc9qj1EPNEUNM9w?download=1" |
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_LANGUAGES = ("eng_Latn", |
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"lmo_Latn", |
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"ita_Latn", |
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"fur_Latn", |
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"scn_Latn", |
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"srd_Latn", |
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"vec_Latn", |
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"azb_Arab", |
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"azj_Latn", |
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"tur_Latn", |
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"kmr_Latn", |
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"ckb_Arab", |
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"nno_Latn", |
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"nob_Latn", |
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"lim_Latn", |
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"ltz_Latn", |
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"nld_Latn", |
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"lvs_Latn", |
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"ltg_Latn", |
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"acm_Arab", |
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"acq_Arab", |
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"aeb_Arab", |
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"ajp_Arab", |
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"apc_Arab", |
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"arb_Arab", |
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"ars_Arab", |
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"ary_Arab", |
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"arz_Arab", |
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"kab_Latn", |
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"asm_Beng", |
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"ben_Beng", |
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"lij_Latn", |
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"oci_Latn", |
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"yue_Hant", |
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"zho_Hans", |
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"zho_Hant", |
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"glg_Latn", |
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"spa_Latn", |
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"por_Latn", |
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"nso_Latn", |
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"sot_Latn") |
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class XnliConfig(datasets.BuilderConfig): |
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"""BuilderConfig for XNLI.""" |
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def __init__(self, language: str, languages=None, **kwargs): |
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"""BuilderConfig for XNLI. |
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Args: |
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language: One of ar,bg,de,el,en,es,fr,hi,ru,sw,th,tr,ur,vi,zh, or all_languages |
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**kwargs: keyword arguments forwarded to super. |
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""" |
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super(XnliConfig, self).__init__(**kwargs) |
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self.language = language |
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if language != "all_languages": |
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self.languages = [language] |
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else: |
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self.languages = languages if languages is not None else _LANGUAGES |
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class Xnli(datasets.GeneratorBasedBuilder): |
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"""XNLI: The Cross-Lingual NLI Corpus. Version 1.0.""" |
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VERSION = datasets.Version("1.1.0", "") |
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BUILDER_CONFIG_CLASS = XnliConfig |
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BUILDER_CONFIGS = [ |
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XnliConfig( |
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name=lang, |
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language=lang, |
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version=datasets.Version("1.1.0", ""), |
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description=f"Plain text import of XNLI for the {lang} language", |
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) |
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for lang in _LANGUAGES |
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] + [ |
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XnliConfig( |
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name="all_languages", |
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language="all_languages", |
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version=datasets.Version("1.1.0", ""), |
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description="Plain text import of XNLI for all languages", |
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) |
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] |
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def _info(self): |
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if self.config.language == "all_languages": |
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features = datasets.Features( |
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{ |
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"premise": datasets.Translation( |
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languages=_LANGUAGES, |
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), |
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"hypothesis": datasets.TranslationVariableLanguages( |
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languages=_LANGUAGES, |
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), |
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"label": datasets.ClassLabel(names=["entailment", "neutral", "contradiction"]), |
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} |
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) |
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else: |
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features = datasets.Features( |
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{ |
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"premise": datasets.Value("string"), |
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"hypothesis": datasets.Value("string"), |
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"label": datasets.ClassLabel(names=["entailment", "neutral", "contradiction"]), |
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} |
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) |
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return datasets.DatasetInfo( |
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description=_DESCRIPTION, |
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features=features, |
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supervised_keys=None, |
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homepage="https://www.nyu.edu/projects/bowman/xnli/", |
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citation=_CITATION, |
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) |
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def _split_generators(self, dl_manager): |
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dl_dirs = dl_manager.download_and_extract( |
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{ |
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"train_data": _TRAIN_DATA_URL, |
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"test_data": _TEST_DATA_URL, |
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"val_data": _VAL_DATA_URL, |
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} |
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) |
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train_dir = os.path.join(dl_dirs["train_data"]) |
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test_dir = os.path.join(dl_dirs["test_data"]) |
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val_dir = os.path.join(dl_dirs["val_data"]) |
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return [ |
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datasets.SplitGenerator( |
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name=datasets.Split.TRAIN, |
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gen_kwargs={ |
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"filepaths": [ |
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os.path.join(train_dir, f"train-{lang}.tsv") for lang in self.config.languages if lang=='eng_Latn' |
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], |
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"data_format": "XNLI-MT", |
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}, |
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), |
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datasets.SplitGenerator( |
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name=datasets.Split.TEST, |
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gen_kwargs={"filepaths": [os.path.join(test_dir, "test.tsv")], "data_format": "XNLI"}, |
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), |
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datasets.SplitGenerator( |
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name=datasets.Split.VALIDATION, |
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gen_kwargs={"filepaths": [os.path.join(val_dir, "dev.tsv")], "data_format": "XNLI"}, |
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), |
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] |
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def _generate_examples(self, data_format, filepaths): |
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"""This function returns the examples in the raw (text) form.""" |
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if self.config.language == "all_languages": |
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if data_format == "XNLI-MT": |
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with ExitStack() as stack: |
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files = [stack.enter_context(open(filepath, encoding="utf-8")) for filepath in filepaths] |
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readers = [csv.DictReader(file, delimiter="\t", quoting=csv.QUOTE_NONE) for file in files] |
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for row_idx, rows in enumerate(zip(*readers)): |
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yield row_idx, { |
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"premise": {lang: row["premise"] for lang, row in zip(self.config.languages, rows)}, |
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"hypothesis": {lang: row["hypo"] for lang, row in zip(self.config.languages, rows)}, |
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"label": rows[0]["label"].replace("contradictory", "contradiction"), |
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} |
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else: |
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rows_per_pair_id = collections.defaultdict(list) |
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for filepath in filepaths: |
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with open(filepath, encoding="utf-8") as f: |
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reader = csv.DictReader(f, delimiter="\t", quoting=csv.QUOTE_NONE) |
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for row in reader: |
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rows_per_pair_id[row["pairID"]].append(row) |
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for rows in rows_per_pair_id.values(): |
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premise = {row["language"]: row["sentence1"] for row in rows} |
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hypothesis = {row["language"]: row["sentence2"] for row in rows} |
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yield rows[0]["pairID"], { |
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"premise": premise, |
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"hypothesis": hypothesis, |
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"label": rows[0]["gold_label"], |
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} |
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else: |
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if data_format == "XNLI-MT": |
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for file_idx, filepath in enumerate(filepaths): |
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file = open(filepath, encoding="utf-8") |
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reader = csv.DictReader(file, delimiter="\t", quoting=csv.QUOTE_NONE) |
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for row_idx, row in enumerate(reader): |
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key = str(file_idx) + "_" + str(row_idx) |
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yield key, { |
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"premise": row["premise"], |
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"hypothesis": row["hypo"], |
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"label": row["label"].replace("contradictory", "contradiction"), |
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} |
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else: |
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for filepath in filepaths: |
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with open(filepath, encoding="utf-8") as f: |
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reader = csv.DictReader(f, delimiter="\t", quoting=csv.QUOTE_NONE) |
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for row in reader: |
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if row["language"] == self.config.language: |
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yield row["pairID"], { |
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"premise": row["sentence1"], |
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"hypothesis": row["sentence2"], |
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"label": row["gold_label"], |
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} |