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BaCon: Boosting Imbalanced Semi-supervised Learning via Balanced Feature-Level Contrastive Learning
March 21, 2024, 4:42 a.m. | Qianhan Feng, Lujing Xie, Shijie Fang, Tong Lin
cs.LG updates on arXiv.org arxiv.org
Abstract: Semi-supervised Learning (SSL) reduces the need for extensive annotations in deep learning, but the more realistic challenge of imbalanced data distribution in SSL remains largely unexplored. In Class Imbalanced Semi-supervised Learning (CISSL), the bias introduced by unreliable pseudo-labels can be exacerbated by imbalanced data distributions. Most existing methods address this issue at instance-level through reweighting or resampling, but the performance is heavily limited by their reliance on biased backbone representation. Some other methods do perform …
abstract annotations arxiv bias boosting challenge class cs.cv cs.lg data deep learning distribution feature labels semi-supervised semi-supervised learning ssl supervised learning type via
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