顶刊TPAMI 2026！数据增广最新研究成果

TL;DR - A Guangdong University of Technology team (first author Liu Fangqing) published "Positive Data Augmentation Based on Manifold Heuristic Optimization for Image Classification" in IEEE TPAMI, recasting positive-sample augmentation as a feature-distribution optimization problem rather than a neural-feedback-driven policy search. It matters because it targets few-shot regimes where generative augmentation methods need large training corpora.

• Method (MHOA): A manifold heuristic optimization algorithm built on the manifold assumption, with a "distribution-preservation first" principle — augmented data should be i.i.d. with the original dataset in feature space.
• Search design: Reduces the optimization to a low-dimensional search space focused on key feature-pixel neighborhoods around object contours, avoiding reliance on network feedback signals.
• Reported results: Evaluated on Mini-ImageNet, CUB200, and CIFAR-FS across GoogleNet, ResNet18/50, and EfficientNet-B1; the post claims a 24.03% Top-1 accuracy gain with ResNet50 on the few-shot-heavy CUB200, beating CutMix, MixUp, AutoAugment, and a dozen-plus other baselines.
• Caveat: This is a promotional WeChat repost, not the paper itself — no ablations, baselines detail, or gain definition (absolute vs. relative) are given; only the DOI (10.1109/TPAMI.2026.3657249) is provided.