Mr. Yanrong Guo Profile

Yanrong Guo

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Proceedings Article | 13 June 2024 Paper

Dense mutual information maximization for few-shot classification

Yiming Shen, Yanrong Guo

Proceedings Volume 13180, 131802F (2024) https://doi.org/10.1117/12.3033761

KEYWORDS: Image classification, Data modeling, Image enhancement, Mathematical optimization, Feature extraction, Modeling

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Few-shot learning (FSL) aims to learn new visual categories from a limited number of labeled examples. The use of mutual information is beneficial for improving the discrimination of feature embeddings, which makes metric classification more accurate. In this context, we propose Dense Masked Deep InfoMax Networks (DMDIN) based on Masked Image Modeling (MIM) framework with convolutional neural networks (CNN). DMDIN effectively incorporates the mutual information maximization strategy into self-supervised pretraining, improving its performance in few-shot learning. More specifically, DMDIN first generates two augmented views of each image through spatial transformations and color jittering for one view, and random RGB mean patching for the other. Second, DMDIN maximizes mutual information between dense features from these views, DMDIN learns more generalized representations, diverging from traditional patch reconstruction-based methods. Our method is evaluated on the miniImageNet, CIFAR-FS, and CUB datasets. The results validate the effectiveness of the proposed method in the few-shot learning scenario.

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