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Register a new userContractNLI: A Dataset for Document-level Natural Language Inference for Contracts
Contractnli: مجموعة بيانات لاستدلال اللغة الطبيعية على مستوى المستند للعقود
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مراجعة العقود هي إجراء يستغرق وقتا طويلا يتحمل نفقات كبيرة للشركات وعدم المساواة الاجتماعية لأولئك الذين لا يستطيعون تحمل تكاليفها. في هذا العمل، نقترح استنتاج اللغة الطبيعي على مستوى المستند (NLI) للعقود "، وهو جديد، تطبيق عالمي حقيقي من NLI يتناول مثل هذه المشاكل. في هذه المهمة، يتم إعطاء نظام مجموعة من الفرضيات (مثل بعض الالتزامات بالاتفاق قد ينجو من الإنهاء. ") وعقد، ويطلب منها تصنيف ما إذا كانت كل فرضية تنطوي عليها" "، تناقض مع" لم يذكره "(محايد) العقد وكذلك تحديد الأدلة" للقرار على أنه يمتد في العقد. شرحنا وإطلاق سراح أكبر جوربوس حتى الآن يتكون من 607 عقدا مشروحا. نوضح بعد ذلك أن النماذج الحالية تفشل بشكل سيء في مهمتنا وإدخال خط أساس قوي، والتي (أ) تحديد دليل الأدلة كتصنيف متعدد العلامات على المدافع بدلا من محاولة التنبؤ بطارية الرموز البديلة والنهاية، و (ب) توظف تجزئة السياق أكثر تطورا للتعامل مع وثائق طويلة. نوضح أيضا أن الخصائص اللغوية للعقود، مثل النفي من خلال الاستثناءات، تساهم في صعوبة هذه المهمة وأن هناك مجالا كبيرا للتحسين.
Reviewing contracts is a time-consuming procedure that incurs large expenses to companies and social inequality to those who cannot afford it. In this work, we propose document-level natural language inference (NLI) for contracts'', a novel, real-world application of NLI that addresses such problems. In this task, a system is given a set of hypotheses (such as Some obligations of Agreement may survive termination.'') and a contract, and it is asked to classify whether each hypothesis is entailed by'', contradicting to'' or not mentioned by'' (neutral to) the contract as well as identifying evidence'' for the decision as spans in the contract. We annotated and release the largest corpus to date consisting of 607 annotated contracts. We then show that existing models fail badly on our task and introduce a strong baseline, which (a) models evidence identification as multi-label classification over spans instead of trying to predict start and end tokens, and (b) employs more sophisticated context segmentation for dealing with long documents. We also show that linguistic characteristics of contracts, such as negations by exceptions, are contributing to the difficulty of this task and that there is much room for improvement.
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