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Register a new userLearning Logic Rules for Document-Level Relation Extraction
تعلم قواعد المنطق لاستخراج العلاقة على مستوى المستند
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استخراج العلاقات على مستوى المستند يهدف إلى تحديد العلاقات بين الكيانات في وثيقة كاملة. اعتمدت الجهود السابقة لالتقاط التبعيات البعيدة المدى اعتمادا كبيرا على تمثيلات قوية ضمنيا تعلمت من خلال (الرسم البياني) الشبكات العصبية، مما يجعل النموذج أقل شفافية. لمعالجة هذا التحدي، في هذه الورقة، نقترح Logire، نموذج احتمالي رواية لاستخراج العلاقة على مستوى المستند من خلال قواعد المنطق التعلم. يعامل Logire القواعد المنطقية مثل المتغيرات الكامنة وتتكون من وحدات اثنين: مولد القاعدة واستخراج العلاقة. إن مولد القاعدة هو توليد قواعد المنطق التي يحتمل أن تسهم في التنبؤات النهائية، ونضول النازع العلاقة تنبؤات نهائية بناء على قواعد المنطق التي تم إنشاؤها. يمكن تحسين هاتين الوحداتتين بكفاءة مع خوارزمية التوقعات (EM). من خلال إدخال القواعد المنطقية في الشبكات العصبية، يمكن ل Rogire أن تلتقط الصريح التبعيات طويلة المدى وكذلك الاستمتاع بتفسير أفضل. تظهر النتائج التجريبية أن تتفوق بشكل كبير على العديد من خطوط الأساس القوية من حيث الأداء العلاقة والاتساق المنطقي. يتوفر الكود الخاص بنا في https://github.com/rudongyu/logire.
Document-level relation extraction aims to identify relations between entities in a whole document. Prior efforts to capture long-range dependencies have relied heavily on implicitly powerful representations learned through (graph) neural networks, which makes the model less transparent. To tackle this challenge, in this paper, we propose LogiRE, a novel probabilistic model for document-level relation extraction by learning logic rules. LogiRE treats logic rules as latent variables and consists of two modules: a rule generator and a relation extractor. The rule generator is to generate logic rules potentially contributing to final predictions, and the relation extractor outputs final predictions based on the generated logic rules. Those two modules can be efficiently optimized with the expectation-maximization (EM) algorithm. By introducing logic rules into neural networks, LogiRE can explicitly capture long-range dependencies as well as enjoy better interpretation. Empirical results show that significantly outperforms several strong baselines in terms of relation performance and logical consistency. Our code is available at https://github.com/rudongyu/LogiRE.
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Extracting relations across large text spans has been relatively underexplored in NLP, but it is particularly important for high-value domains such as biomedicine, where obtaining high recall of the latest findings is crucial for practical applicatio
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Fully understanding narratives often requires identifying events in the context of whole documents and modeling the event relations. However, document-level event extraction is a challenging task as it requires the extraction of event and entity core
ference, and capturing arguments that span across different sentences. Existing works on event extraction usually confine on extracting events from single sentences, which fail to capture the relationships between the event mentions at the scale of a document, as well as the event arguments that appear in a different sentence than the event trigger. In this paper, we propose an end-to-end model leveraging Deep Value Networks (DVN), a structured prediction algorithm, to efficiently capture cross-event dependencies for document-level event extraction. Experimental results show that our approach achieves comparable performance to CRF-based models on ACE05, while enjoys significantly higher computational efficiency.
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