首页|Robust semi-supervised learning in open environments

Robust semi-supervised learning in open environments

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Semi-supervised learning (SSL) aims to improve performance by exploiting unlabeled data when labels are scarce. Conventional SSL studies typically assume close environments where important factors (e.g., label, feature, distribution) between labeled and unlabeled data are consistent. However, more practical tasks involve open environments where important factors between labeled and unlabeled data are inconsistent. It has been reported that exploiting inconsistent unlabeled data causes severe performance degradation, even worse than the simple supervised learning baseline. Manually verifying the quality of unlabeled data is not desirable, therefore, it is important to study robust SSL with inconsistent unlabeled data in open environments. This paper briefly introduces some advances in this line of research, focusing on techniques concerning label, feature, and data distribution inconsistency in SSL, and presents the evaluation benchmarks. Open research problems are also discussed for reference purposes.

machine learningopen environmentsemi-supervised learningrobust SSL

Lan-Zhe GUO、Lin-Han JIA、Jie-Jing SHAO、Yu-Feng LI

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National Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210023, China

School of Intelligence Science and Technology, Nanjing University, Suzhou 215163, China

School of Artificial Intelligence, Nanjing University, Nanjing 210023, China

machine learning open environment semi-supervised learning robust SSL

2025

计算机科学前沿
高等教育出版社

计算机科学前沿

影响因子:0.303
ISSN:2095-2228
年,卷(期):2025.19(8)