Computer Science > Computer Vision and Pattern Recognition
[Submitted on 9 Mar 2022 (v1), last revised 2 Nov 2024 (this version, v3)]
Title:Active Self-Semi-Supervised Learning for Few Labeled Samples
View PDF HTML (experimental)Abstract:Training deep models with limited annotations poses a significant challenge when applied to diverse practical domains. Employing semi-supervised learning alongside the self-supervised model offers the potential to enhance label efficiency. However, this approach faces a bottleneck in reducing the need for labels. We observed that the semi-supervised model disrupts valuable information from self-supervised learning when only limited labels are available. To address this issue, this paper proposes a simple yet effective framework, active self-semi-supervised learning (AS3L). AS3L bootstraps semi-supervised models with prior pseudo-labels (PPL). These PPLs are obtained by label propagation over self-supervised features. Based on the observations the accuracy of PPL is not only affected by the quality of features but also by the selection of the labeled samples. We develop active learning and label propagation strategies to obtain accurate PPL. Consequently, our framework can significantly improve the performance of models in the case of limited annotations while demonstrating fast convergence. On the image classification tasks across four datasets, our method outperforms the baseline by an average of 5.4\%. Additionally, it achieves the same accuracy as the baseline method in about 1/3 of the training time.
Submission history
From: Ziting Wen [view email][v1] Wed, 9 Mar 2022 07:45:05 UTC (569 KB)
[v2] Wed, 5 Oct 2022 03:17:56 UTC (1,562 KB)
[v3] Sat, 2 Nov 2024 01:53:53 UTC (1,332 KB)
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