Abstract
Sparse subspace clustering (SSC) achieves state-of-the-art clustering performance via solving a \( \ell_{1} \) minimization problem which is a convex relaxation of \( \ell_{0} \) minimization. In this paper, we propose a unified fractional-order function based reweighted \( \ell_{1} \) minimization framework, which can approximate \( \ell_{0} \) norm better than \( \ell_{1} \) norm and reweighted \( \ell_{1} \) minimization framework. Based on the unified framework, a fractional-order function is introduced to reweight the sparse subspace clustering algorithm (FRSSC) to further improve the sparsity representation of data. By imposing constraints on coefficient matrix, the proposed weights are embedded into the sparse formulation to obtain the sparsest representation in each iteration. Experimental results demonstrate the advantage of FRSSC over state-of-the-art methods.
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Acknowledgments
This work was supported in part by the National Natural Science Foundation of China under Grant 61401209, in part by the Natural Science Foundation of Jiangsu Province, China under Grant BK20140790, in part by the Fundamental Research Funds for the Central Universities under Grant 30916011324, and in part by China Postdoctoral Science Foundation under Grants 2014T70525 & 2013M531364.
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Zhai, Y., Ji, Z. (2017). Reweighted Sparse Subspace Clustering Based on Fractional-Order Function. In: Sun, Y., Lu, H., Zhang, L., Yang, J., Huang, H. (eds) Intelligence Science and Big Data Engineering. IScIDE 2017. Lecture Notes in Computer Science(), vol 10559. Springer, Cham. https://doi.org/10.1007/978-3-319-67777-4_36
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DOI: https://doi.org/10.1007/978-3-319-67777-4_36
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