Combating representation learning disparity with geometric harmonization

Z Zhou, J Yao, F Hong, Y Zhang… - Advances in Neural …, 2023 - proceedings.neurips.cc
Self-supervised learning (SSL) as an effective paradigm of representation learning has
achieved tremendous success on various curated datasets in diverse scenarios …

Out-of-distribution detection in long-tailed recognition with calibrated outlier class learning

W Miao, G Pang, X Bai, T Li, J Zheng - Proceedings of the AAAI …, 2024 - ojs.aaai.org
Existing out-of-distribution (OOD) methods have shown great success on balanced datasets
but become ineffective in long-tailed recognition (LTR) scenarios where 1) OOD samples …

On harmonizing implicit subpopulations

F Hong, J Yao, Y Lyu, Z Zhou, I Tsang… - The Twelfth …, 2023 - openreview.net
Machine learning algorithms learned from data with skewed distributions usually suffer from
poor generalization, especially when minority classes matter as much as, or even more than …

Locally Estimated Global Perturbations are Better than Local Perturbations for Federated Sharpness-aware Minimization

Z Fan, S Hu, J Yao, G Niu, Y Zhang… - arxiv preprint arxiv …, 2024 - arxiv.org
In federated learning (FL), the multi-step update and data heterogeneity among clients often
lead to a loss landscape with sharper minima, degenerating the performance of the resulted …

Orthogonal uncertainty representation of data manifold for robust long-tailed learning

Y Ma, L Jiao, F Liu, S Yang, X Liu, L Li - Proceedings of the 31st ACM …, 2023 - dl.acm.org
In scenarios with long-tailed distributions, the model's ability to identify tail classes is limited
due to the under-representation of tail samples. Class rebalancing, information …

BEM: Balanced and Entropy-based Mix for Long-Tailed Semi-Supervised Learning

H Zheng, L Zhou, H Li, J Su… - Proceedings of the …, 2024 - openaccess.thecvf.com
Data mixing methods play a crucial role in semi-supervised learning (SSL) but their
application is unexplored in long-tailed semi-supervised learning (LTSSL). The primary …

Twice class bias correction for imbalanced semi-supervised learning

L Li, B Tao, L Han, D Zhan, H Ye - … of the AAAI Conference on Artificial …, 2024 - ojs.aaai.org
Differing from traditional semi-supervised learning, class-imbalanced semi-supervised
learning presents two distinct challenges:(1) The imbalanced distribution of training samples …

Robust representation learning for unreliable partial label learning

Y Shi, DD Wu, X Geng, ML Zhang - arxiv preprint arxiv:2308.16718, 2023 - arxiv.org
Partial Label Learning (PLL) is a type of weakly supervised learning where each training
instance is assigned a set of candidate labels, but only one label is the ground-truth …

Wrapped cauchy distributed angular softmax for long-tailed visual recognition

B Han - International Conference on Machine Learning, 2023 - proceedings.mlr.press
Addressing imbalanced or long-tailed data is a major challenge in visual recognition tasks
due to disparities between training and testing distributions and issues with data noise. We …

Fake it till make it: Federated learning with consensus-oriented generation

R Ye, Y Du, Z Ni, S Chen, Y Wang - arxiv preprint arxiv:2312.05966, 2023 - arxiv.org
In federated learning (FL), data heterogeneity is one key bottleneck that causes model
divergence and limits performance. Addressing this, existing methods often regard data …