Computationally Efficient Decompositions of Oblique Projection Matrices
Journal Article
·
· SIAM Journal on Matrix Analysis and Applications
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of California, Merced, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Oblique projection matrices arise in problems in weighted least squares, signal processing, and optimization. While these matrices can be potentially very large, their low-rank structure can be exploited for efficient computation. Here, we propose fast and scalable algorithms for computing their eigendecomposition and singular value decomposition (SVD). Numerical experiments that compare our proposed approaches to existing methods, including randomized SVD, are presented. In addition, we test their accuracy on linear systems from equality constrained optimization problems.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
- Grant/Contract Number:
- AC02-06CH11357; AC52-07NA27344
- OSTI ID:
- 1680061
- Alternate ID(s):
- OSTI ID: 1804290
- Report Number(s):
- LLNL-JRNL--817763; 162611
- Journal Information:
- SIAM Journal on Matrix Analysis and Applications, Journal Name: SIAM Journal on Matrix Analysis and Applications Journal Issue: 2 Vol. 41; ISSN 0895-4798
- Publisher:
- Society for Industrial and Applied Mathematics (SIAM)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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