论文标题
用于语义分割的归一化特征蒸馏
Normalized Feature Distillation for Semantic Segmentation
论文作者
论文摘要
作为模型压缩的一种有希望的方法，知识蒸馏通过从笨拙的知识转移知识来改善紧凑模型的性能。用于指导学生培训的知识很重要。语义分割中的先前蒸馏方法努力从这些特征中提取各种形式的知识，涉及依靠先前信息并具有有限的性能增长的精心手动设计。在本文中，我们提出了一种称为归一化特征蒸馏（NFD）的简单而有效的特征蒸馏方法，旨在实现原始功能的有效蒸馏，而无需手动设计新的知识形式。关键思想是防止学生通过标准化模仿教师特征响应的大小。我们的方法可获得有关CityScapes，VOC 2012和ADE20K数据集的语义细分的最新蒸馏结果。代码将可用。
As a promising approach in model compression, knowledge distillation improves the performance of a compact model by transferring the knowledge from a cumbersome one. The kind of knowledge used to guide the training of the student is important. Previous distillation methods in semantic segmentation strive to extract various forms of knowledge from the features, which involve elaborate manual design relying on prior information and have limited performance gains. In this paper, we propose a simple yet effective feature distillation method called normalized feature distillation (NFD), aiming to enable effective distillation with the original features without the need to manually design new forms of knowledge. The key idea is to prevent the student from focusing on imitating the magnitude of the teacher's feature response by normalization. Our method achieves state-of-the-art distillation results for semantic segmentation on Cityscapes, VOC 2012, and ADE20K datasets. Code will be available.
