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Register a new userDistilling Word Meaning in Context from Pre-trained Language Models
تقطير كلمة معنى في السياق من نماذج اللغة المدربة مسبقا
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في هذه الدراسة، نقترح طريقة تعلم الإشراف على الذات التي تطبق تمثيلات معنى الكلمات في السياق من نموذج لغة ملثم مسبقا مسبقا. تعد تمثيلات الكلمات هي الأساس للدلالات المعجمية في السياق وتقديرات التشابه المنصوصية الدلالية غير المرفوعة (STS). تقوم الدراسة السابقة بتحويل التمثيلات السياقية التي تستخدم تضمين كلمة ثابتة لإضعاف الآثار المفرطة لمعلومات السياقية. على النقيض من ذلك، تستمد الأسلوب المقترح على تمثيلات كلمة معنى في السياق مع الحفاظ على معلومات السياق المفيدة سليمة. على وجه التحديد، تتعلم طريقةنا الجمع بين مخرجات الطبقات المخفية المختلفة التي تستخدم الانتباه عن الذات من خلال التعلم الذاتي الخاضع للإشراف مع كائن تدريب تلقائيا تلقائيا. لتقييم أداء النهج المقترح، أجرينا تجارب مقارنة باستخدام مجموعة من المهام القياسية. تؤكد النتائج أن تمثيلاتنا أظهرت أداء تنافسي مقارنة بسلطة حديثة من الأسلوب لتحويل التمثيلات السياقية للمهام الدلالية المعجمية السياقة وتفوقها على تقدير STS.
In this study, we propose a self-supervised learning method that distils representations of word meaning in context from a pre-trained masked language model. Word representations are the basis for context-aware lexical semantics and unsupervised semantic textual similarity (STS) estimation. A previous study transforms contextualised representations employing static word embeddings to weaken excessive effects of contextual information. In contrast, the proposed method derives representations of word meaning in context while preserving useful context information intact. Specifically, our method learns to combine outputs of different hidden layers using self-attention through self-supervised learning with an automatically generated training corpus. To evaluate the performance of the proposed approach, we performed comparative experiments using a range of benchmark tasks. The results confirm that our representations exhibited a competitive performance compared to that of the state-of-the-art method transforming contextualised representations for the context-aware lexical semantic tasks and outperformed it for STS estimation.
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