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arXiv · 1609.08221

Simultaneous Low-rank Component and Graph Estimation for High-dimensional Graph Signals: Application to Brain Imaging

Rui Liu·Hossein Nejati·Seyed Hamid Safavi·Ngai-Man Cheung
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Abstract

We propose an algorithm to uncover the intrinsic low-rank component of a high-dimensional, graph-smooth and grossly-corrupted dataset, under the situations that the underlying graph is unknown. Based on a model with a low-rank component plus a sparse perturbation, and an initial graph estimation, our proposed algorithm simultaneously learns the low-rank component and refines the graph. Our evaluations using synthetic and real brain imaging data in unsupervised and supervised classification tasks demonstrate encouraging performance.

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Rui Liu, Hossein Nejati, Seyed Hamid Safavi, Ngai-Man Cheung. 2016-09-26. Simultaneous Low-rank Component and Graph Estimation for High-dimensional Graph Signals: Application to Brain Imaging. https://arxiv.org/abs/1609.08221

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