Scalable Sparse Subspace Clustering by Orthogonal Matching Pursuit

By Chong You, Daniel P. Robinson, René Vidal. Computer Vision and Pattern Recognition, 2015

379 citations recorded by the source corpus.

Subspace clustering methods based on ℓ1, ℓ2 or nuclear norm regularization have become very popular due to their simplicity, theoretical guarantees and empirical success. However, the choice of the regularizer can greatly impact both theory and practice. For instance, ℓ1 regularization is guaranteed to give a subspace-preserving affinity (i.e., there are no connections between points from different subspaces) under broad conditions (e.g., arbitrary subspaces and corrupted data). However, it requires solving a large scale convex optimization problem. On the other hand, ℓ2 and nuclear norm regularization provide efficient closed form solutions, but require very strong assumptions to guarantee a subspace-preserving affinity, e.g., independent subspaces and uncorrupted data. In this paper we study a subspace clustering method based on orthogonal matching pursuit. We show that the method is both computationally efficient and guaranteed to give a subspace-preserving affinity under broad conditions. Experiments on synthetic data verify our theoretical analysis, and applications in handwritten digit and face clustering show that our approach achieves the best trade off between accuracy and efficiency. Moreover, our approach is the first one to handle 100,000 data points.

Subfields: Computational Mechanics, Computer Vision and Pattern Recognition, Signal Processing

View Paper: https://www.semanticscholar.org/paper/e767a107df5d559152912b663b196b009d67f000

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In Computational Mechanics

  1. Zhouchen Lin
  2. Canyi Lu
  3. Jiashi Feng
  4. Shuicheng Yan
  5. Heng Huang
  6. Hongdong Li
  7. Tao Mei
  8. Weidong (Tom) Cai

In Computer Vision and Pattern Recognition

  1. Dacheng Tao
  2. Luc Van Gool
  3. Jiashi Feng
  4. Yi Yang
  5. Shuicheng Yan
  6. Ming-Hsuan Yang
  7. Xiaogang Wang
  8. Trevor Darrell

In Signal Processing

  1. Zhouchen Lin
  2. Shuicheng Yan
  3. Tao Mei
  4. Xiao Fu
  5. Cheng Deng
  6. Ian David Reid
  7. Zhiyuan Dang
  8. Heng Huang

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