Solving a low-rank factorization model for matrix completion by a nonlinear successive over-relaxation algorithm
The matrix completion problem is to recover a low-rank matrix from a subset of its entries. The main solution strategy for this problem has been based on nuclear-norm minimization which requires computing singular value decompositions—a task that is increasingly costly as matrix sizes and ranks incr...
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| Published in: | Mathematical programming computation Vol. 4; no. 4; pp. 333 - 361 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Berlin/Heidelberg
Springer-Verlag
01.12.2012
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| Subjects: | |
| ISSN: | 1867-2949, 1867-2957 |
| Online Access: | Get full text |
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| Summary: | The matrix completion problem is to recover a low-rank matrix from a subset of its entries. The main solution strategy for this problem has been based on nuclear-norm minimization which requires computing singular value decompositions—a task that is increasingly costly as matrix sizes and ranks increase. To improve the capacity of solving large-scale problems, we propose a low-rank factorization model and construct a nonlinear successive over-relaxation (SOR) algorithm that only requires solving a linear least squares problem per iteration. Extensive numerical experiments show that the algorithm can reliably solve a wide range of problems at a speed at least several times faster than many nuclear-norm minimization algorithms. In addition, convergence of this nonlinear SOR algorithm to a stationary point is analyzed. |
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| ISSN: | 1867-2949 1867-2957 |
| DOI: | 10.1007/s12532-012-0044-1 |