Semi-Supervised Noise Adaptation: Transferring Knowledge from Noise Domain
This work proposes the semi-supervised noise adaptation (SSNA) problem, which aims to enhance model generalization in semi-supervised settings by leveraging a synthetic noise domain—such as Gaussian noise—lacking semantic information as a surrogate source domain, using only a small number of labeled target-domain samples. To address this challenge, the authors introduce the Noise Adaptation Framework (NAF), which, for the first time, incorporates synthetic noise domains into semi-supervised transfer learning and derives a theoretical generalization bound to guide algorithm design. Empirical results demonstrate that NAF effectively exploits knowledge from the noise domain to tighten the generalization bound on the target domain, leading to significant performance improvements over existing semi-supervised learning methods across multiple benchmarks.