通过双向子域对齐,通过弱源域标签进行无监督的域调整
Heng Zhou1, Ping Zhong1, Daoliang Li1
1College of Information and Electrical Engineering, China Agricultural University, Beijing, 100083, China; National Innovation Center for Digital Fishery, Beijing, China; Key Laboratory of Smart Farming Technologies for Aquatic Animal and Livestock, Ministry of Agriculture and Rural Affairs, Beijing, China; Beijing Engineering and Technology Research Center for Internet of Things in Agriculture, Beijing, China.
概括
这项研究引入了无监督域调整 (UDA) 的新框架,该框架可以通过不可靠的源标签提高性能. 它使用代伪标签和双向子域对齐 (BSA) 来进行强大的特征提取和域对齐.
科学领域:
- 计算机视觉 计算机视觉
- 机器学习 机器学习
- 人工智能的人工智能
背景情况:
- 无监督域名适应 (UDA) 促进了标记源域和未标记目标域之间的知识传输.
- 现实世界的UDA受到噪音或缺失的源域标签的挑战,阻碍了性能.
- 现有的方法经常与源数据标签的不可靠性作斗争.
研究的目的:
- 开发一个新的框架,用于在UDA中进行强大的特征提取,特别是解决不可靠的来源标签.
- 通过改进特征可区分性和域调整来提高UDA性能.
- 为了使有效的知识转移,即使源域标签是不完美的.
主要方法:
- 代伪标签和基于队列的聚类,以生成标签独立的类中心.
- 双向子域对齐 (BSA) 用于通过匹配子域分布来纠正和增强特征.
- 全球特征对齐的两阶段对抗过程,通过预期-最大化算法进行优化.
主要成果:
- 对基准数据集的最先进方法取得了显著的改进 (Office-31,Office-Home,VisDA-2017).
- 报告的平均准确率为91.5% (办公室-31),76.6% (办公室-家庭) 和87.4% (VisDA-2017).
- 在UDA任务中表现出一致的优越性,包括完全和弱标记的源域.
结论:
- 尽管来源标签不可靠,但拟议的框架有效地提取了强大和歧视性的特征.
- BSA和对抗性学习显著提高了特征纠正和全球对齐.
- 该方法为UDA提供了一个强大的解决方案,在具有挑战性的现实场景中优于现有的方法.
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