Randomized numerical linear algebra: Foundations and algorithms
Рандомизированная численная линейная алгебра: основы и алгоритмы
2020-05-01
SCID: 54.1/89y43v3s
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CUR factorizationsNyström approximationlow-rank approximationrandom embeddingsrandomized numerical linear algebra
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Abstract (AI)
This survey describes probabilistic algorithms for linear algebraic computations, such as factorizing matrices and solving linear systems. It focuses on techniques that have a proven track record for real-world problems. The paper treats both the theoretical foundations of the subject and practical computational issues. Topics include norm estimation, matrix approximation by sampling, structured and unstructured random embeddings, linear regression problems, low-rank approximation, subspace iteration and Krylov methods, error estimation and adaptivity, interpolatory and CUR factorizations, Nyström approximation of positive semidefinite matrices, single-view (‘streaming’) algorithms, full rank-revealing factorizations, solvers for linear systems, and approximation of kernel matrices that arise in machine learning and in scientific computing.
Key Findings
1
It addresses practical reliability through error estimation, adaptivity, streaming algorithms, and randomized solvers for linear systems.
2
It integrates theoretical foundations with practical computational considerations, emphasizing randomized techniques demonstrated effective on real-world problems.
3
The survey covers advanced randomized factorizations and iterative methods, including subspace iteration, Krylov methods, interpolatory and CUR factorizations, Nyström approximation, and full rank-revealing factorizations.
4
The survey presents probabilistic algorithms for core numerical linear algebra tasks, including matrix factorization and linear-system solution.
5
The surveyed methods use sampling and random embeddings for norm estimation, matrix approximation, regression, low-rank approximation, and kernel-matrix approximation.
Research Object
Probabilistic algorithms for numerical linear algebra computations on matrices and linear systems
Research Subject
Theoretical foundations, practical computational issues, and algorithmic techniques for matrix factorization, approximation, estimation, and solving linear systems
Publication Details
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2020-05-01
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