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Register a new userCATE: A Contrastive Pre-trained Model for Metaphor Detection with Semi-supervised Learning
كيت: نموذج مقاوم للتناقض مسبقا للكشف عن الاستعارة مع التعلم شبه الإشرافه
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الاستعارات في كل مكان في اللغة الطبيعية، ويتطلب الكشف عنها منطق سياقي حول ما إذا كان التعارض الدلالي موجود بالفعل.معظم العمل الحالي يعالج هذه المشكلة باستخدام نماذج السياق المدربة مسبقا.على الرغم من نجاحها، تتطلب هذه النماذج كمية كبيرة من البيانات المسمى ولا تستند إلى اللغة اللاحنة.في هذه الورقة، اقترحنا نموذجا متمربا مسبقا مسبقا (كيت) للكشف عن الاستعارة مع التعلم شبه الإشرافه.يستخدم نموذجنا أولا نموذجا مدربا مسبقا للحصول على تمثيل سياقي للكلمات المستهدفة وتوظف هدفا بسيطا لتعزيز المسافة المتزايدة بين الكلمات المستهدفة "الحواس الحرفية والجهزة المجازية القائمة على نظريات لغوية.علاوة على ذلك، نقترح استراتيجية بسيطة لجمع مثيلات مرشحة واسعة النطاق من كوربوس العام وتعميم النموذج عبر التدريب الذاتي.تبين تجارب واسعة أن كيت يحقق أداء أفضل ضد خطوط خطوط البيانات الحديثة على العديد من البيانات القياسية.
Metaphors are ubiquitous in natural language, and detecting them requires contextual reasoning about whether a semantic incongruence actually exists. Most existing work addresses this problem using pre-trained contextualized models. Despite their success, these models require a large amount of labeled data and are not linguistically-based. In this paper, we proposed a ContrAstive pre-Trained modEl (CATE) for metaphor detection with semi-supervised learning. Our model first uses a pre-trained model to obtain a contextual representation of target words and employs a contrastive objective to promote an increased distance between target words' literal and metaphorical senses based on linguistic theories. Furthermore, we propose a simple strategy to collect large-scale candidate instances from the general corpus and generalize the model via self-training. Extensive experiments show that CATE achieves better performance against state-of-the-art baselines on several benchmark datasets.
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