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Register a new userCoarse2Fine: Fine-grained Text Classification on Coarsely-grained Annotated Data
COARSE2FINE: تصنيف النص الرباعي بشكل جيد على البيانات المشروحة المشجعية
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تركز أساليب تصنيف النص الحالية أساسا على مجموعة تسمية ثابتة، في حين أن العديد من التطبيقات في العالم الحقيقي تتطلب تمديد فئات جديدة من الرباعي حيث يزيد عدد العينات لكل علامة. لاستيعاب هذه المتطلبات، نقدم مشكلة جديدة تسمى تصنيف الحبيبات الخشنة إلى الدقيقة، والتي تهدف إلى أداء تصنيف جيد الحبيبات على البيانات المشروحة بشكل خشن. بدلا من طلب التعليقات التوضيحية البشرية المحبوبة الجديدة، فإننا نقوم باختيار الاستفادة من أسماء السطح التسمية باعتبارها الإرشادات البشرية الوحيدة والنسج في نماذج لغوية غنية مدربة مسبقا في استراتيجية الإشراف الضعيفة المتكررة. على وجه التحديد، نقترح أولا صياغة صياغة دقيقة مشروطة على التسمية لتحريك هذه المولدات لمهمتنا. علاوة على ذلك، نركض هدف تنظيمي بناء على قيود العلامات الجميلة الخشنة المستمدة من إعداد مشكلتنا، مما يتيح لنا المزيد من التحسينات على الصيغة السابقة. يستخدم إطار عملنا النماذج الإدارية التي تم ضبطها بشكل جيد لعينة بيانات التدريب الزائفة لتدريب المصنف، و BootStraps على البيانات الحقيقية غير المسبقة لتحسين النموذج. تجارب واسعة دراسات حالة عن مجموعات بيانات عالمية في العالم الحقيقي تثبت أداء فائقا فوق خطوط خطوط تصنيف Sota-Shot-Shot.
Existing text classification methods mainly focus on a fixed label set, whereas many real-world applications require extending to new fine-grained classes as the number of samples per label increases. To accommodate such requirements, we introduce a new problem called coarse-to-fine grained classification, which aims to perform fine-grained classification on coarsely annotated data. Instead of asking for new fine-grained human annotations, we opt to leverage label surface names as the only human guidance and weave in rich pre-trained generative language models into the iterative weak supervision strategy. Specifically, we first propose a label-conditioned fine-tuning formulation to attune these generators for our task. Furthermore, we devise a regularization objective based on the coarse-fine label constraints derived from our problem setting, giving us even further improvements over the prior formulation. Our framework uses the fine-tuned generative models to sample pseudo-training data for training the classifier, and bootstraps on real unlabeled data for model refinement. Extensive experiments and case studies on two real-world datasets demonstrate superior performance over SOTA zero-shot classification baselines.
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