contract-nli.py

# coding=utf-8
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#
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# you may not use this file except in compliance with the License.
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#     http://www.apache.org/licenses/LICENSE-2.0
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"""ContractNLI: A Benchmark Dataset for ContractNLI in English."""

import json
import os
import textwrap

import datasets

MAIN_PATH = 'https://huggingface.co./datasets/cognitivplus/contract-nli/resolve/main'

MAIN_CITATION = """\
 @inproceedings{koreeda-manning-2021-contractnli-dataset,
    title = "{C}ontract{NLI}: A Dataset for Document-level Natural Language Inference for Contracts",
    author = "Koreeda, Yuta  and
      Manning, Christopher",
    booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2021",
    month = nov,
    year = "2021",
    address = "Punta Cana, Dominican Republic",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2021.findings-emnlp.164",
    doi = "10.18653/v1/2021.findings-emnlp.164",
    pages = "1907--1919",
}"""

_DESCRIPTION = """\
ContractNLI: A Benchmark Dataset for ContractNLI in English
"""


CONTRACTNLI_LABELS = ["contradiction", "entailment", "neutral"]


class ContractNLIConfig(datasets.BuilderConfig):
    """BuilderConfig for ContractNLI."""

    def __init__(
        self,
        url,
        data_url,
        data_file,
        citation,
        label_classes=None,
        **kwargs,
    ):
        """BuilderConfig for ContractNLI.

        Args:
          url: `string`, url for the original project
          data_url: `string`, url to download the zip file from
          data_file: `string`, filename for data set
          citation: `string`, citation for the data set
          url: `string`, url for information about the data set
          label_classes: `list[string]`, the list of classes if the label is
            categorical. If not provided, then the label will be of type
            `datasets.Value('float32')`.
          **kwargs: keyword arguments forwarded to super.
        """
        super(ContractNLIConfig, self).__init__(version=datasets.Version("1.0.0", ""), **kwargs)
        self.label_classes = label_classes
        self.url = url
        self.data_url = data_url
        self.data_file = data_file
        self.citation = citation


class ContractNLI(datasets.GeneratorBasedBuilder):
    """ContractNLI: A Benchmark Dataset for ContractNLI in English. Version 1.0"""

    BUILDER_CONFIGS = [
        ContractNLIConfig(
            name="contractnli_a",
            description=textwrap.dedent(
                """\
            The ContractNLI dataset consists of Non-Disclosure Agreements (NDAs). All NDAs have been labeled based 
            on several hypothesis templates as entailment, neutral or contradiction. In this version of the task
            (Task A), the input consists of the relevant part of the document w.r.t. to the hypothesis.
            """
            ),
            label_classes=CONTRACTNLI_LABELS,
            data_url=f"{MAIN_PATH}/contract_nli.zip",
            data_file="contract_nli_v1.jsonl",
            url="https://stanfordnlp.github.io/ contract- nli/",
            citation=textwrap.dedent(
                """\
            @inproceedings{koreeda-manning-2021-contractnli-dataset,
                    title = "{C}ontract{NLI}: A Dataset for Document-level Natural Language Inference for Contracts",
                    author = "Koreeda, Yuta  and
                      Manning, Christopher",
                    booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2021",
                    month = nov,
                    year = "2021",
                    address = "Punta Cana, Dominican Republic",
                    publisher = "Association for Computational Linguistics",
                    url = "https://aclanthology.org/2021.findings-emnlp.164",
                    doi = "10.18653/v1/2021.findings-emnlp.164",
                    pages = "1907--1919",
                }
            }"""
            ),
        ),
        ContractNLIConfig(
            name="contractnli_b",
            description=textwrap.dedent(
                """\
            The ContractNLI dataset consists of Non-Disclosure Agreements (NDAs). All NDAs have been labeled based 
            on several hypothesis templates as entailment, neutral or contradiction. In this version of the task
            (Task B), the input consists of the full document.
            """
            ),
            label_classes=CONTRACTNLI_LABELS,
            data_url=f"{MAIN_PATH}/contract_nli_long.zip",
            data_file="contract_nli_long.jsonl",
            url="https://stanfordnlp.github.io/ contract- nli/",
            citation=textwrap.dedent(
                """\
            @inproceedings{koreeda-manning-2021-contractnli-dataset,
                    title = "{C}ontract{NLI}: A Dataset for Document-level Natural Language Inference for Contracts",
                    author = "Koreeda, Yuta  and
                      Manning, Christopher",
                    booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2021",
                    month = nov,
                    year = "2021",
                    address = "Punta Cana, Dominican Republic",
                    publisher = "Association for Computational Linguistics",
                    url = "https://aclanthology.org/2021.findings-emnlp.164",
                    doi = "10.18653/v1/2021.findings-emnlp.164",
                    pages = "1907--1919",
                }
            }"""
            ),
        ),
    ]

    def _info(self):
        features = {
            "premise": datasets.Value("string"),
            "hypothesis": datasets.Value("string"),
            "label": datasets.ClassLabel(names=CONTRACTNLI_LABELS)
        }

        return datasets.DatasetInfo(
            description=self.config.description,
            features=datasets.Features(features),
            homepage=self.config.url,
            citation=self.config.citation + "\n" + MAIN_CITATION,
        )

    def _split_generators(self, dl_manager):
        data_dir = dl_manager.download_and_extract(self.config.data_url)
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={"filepath": os.path.join(data_dir, self.config.data_file), "split": "train"},
            ),
            datasets.SplitGenerator(
                name=datasets.Split.TEST,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={"filepath": os.path.join(data_dir, self.config.data_file), "split": "test"},
            ),
            datasets.SplitGenerator(
                name=datasets.Split.VALIDATION,
                # These kwargs will be passed to _generate_examples
                gen_kwargs={
                    "filepath": os.path.join(data_dir, self.config.data_file),
                    "split": "dev",
                },
            ),
        ]

    def _generate_examples(self, filepath, split):
        """This function returns the examples in the raw (text) form."""
        if self.config.name == "contractnli_a":
            with open(filepath, "r", encoding="utf-8") as f:
                for id_, row in enumerate(f):
                    data = json.loads(row)
                    if data["subset"] == split:
                        yield id_, {
                            "premise": data["premise"],
                            "hypothesis": data["hypothesis"],
                            "label": data["label"],
                        }
        elif self.config.name == "contractnli_b":
            with open(filepath, "r", encoding="utf-8") as f:
                sid = -1
                for id_, row in enumerate(f):
                    data = json.loads(row)
                    if data["subset"] == split:
                        for sample in data['hypothesises/labels']:
                            sid += 1
                            yield sid, {
                                "premise": data["premise"],
                                "hypothesis": sample['hypothesis'],
                                "label": sample['label'],
                            }