arXiv Machine Learning By Andrea Cavallo, Zhan Gao, Elvin Isufi

Sparse Covariance Neural Networks

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arXiv:2410. 01669v3 Announce Type: replace Abstract: Covariance Neural Networks (VNNs) perform graph convolutions on the covariance matrix of input data to leverage correlation information as pairwise connections.

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arXiv Computer Vision
Sep 18

Training-Adaptive Convolutional Sparse Coding via Information Bottleneck for Robust Visual Representation

The paper introduces a training‑adaptive convolutional sparse coding (CSC) framework that learns the sparsity coefficient jointly with network parameters using an unfolded FISTA optimization. By treating the coefficient as a differentiable variable, the method balances information retention and compression through an information bottleneck perspective, promoting compact yet task‑relevant representations. A label‑free post‑training strategy further adjusts compression for corrupted inputs, yielding competitive accuracy on clean data and enhanced robustness to perturbations on CIFAR and ImageNet.

By Meng'en Qin, Yinchen Liu, Mingxuan Cui, Youlu Xing