Shifted extended global Lanczos processes for trace estimation with application to network analysis
Shifted extended global Lanczos processes for trace estimation with application to network analysis
复制标题
转移扩展的全局 Lanczos 过程,用于跟踪估计并应用于网络分析
DOI:
10.1007/s10092-020-00395-1
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发表时间:
2021
期刊:
影响因子:
1.7
通讯作者:
Reichel, L.
中科院分区:
文献类型:
--
作者:
Bentbib, A. H.;El Ghomari, M.;Jbilou, K.;Reichel, L.
The need to estimate upper and lower bounds for matrix functions of the form, where the matrixis large and sparse,are block vectors withcolumns, andfis a function arises in many applications, including network analysis and machine learning. This paper describes the shifted extended global symmetric and nonsymmetric Lanczos processes and how they can be applied to approximate the trace. These processes compute approximations in the union of Krylov subspaces determined by positive powers ofAand negative powers of, where the shiftis a user-chosen parameter. WhenAis nonsymmetric, transposes of these powers also are used. WhenAis symmetric and, we describe how error bounds or estimates of bounds for the trace can be computed by pairs of Gauss and Gauss-Radau quadrature rules, or by pairs of Gauss and anti-Gauss quadrature rules. These Gauss-type quadrature rules are defined by recursion coefficients for the shifted extended global Lanczos processes. Gauss and anti-Gauss quadrature rules also can be applied to give estimates of error bounds for the trace whenAis nonsymmetric and. Applications to the computation of the Estrada index for networks and to the nuclear norm of a large matrix are presented. Computed examples show the shifted extended symmetric and nonsymmetric Lanczos processes to produce accurate approximations in fewer steps than the standard symmetric and nonsymmetric global Lanczos processes, respectively.
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DOI:
10.1553/etna_vol50s144
发表时间:
2018
期刊:
ETNA - Electronic Transactions on Numerical Analysis
影响因子:
--
作者:
Bentbib, A. H.;Ghomari, M. El;Jagels, C.;Jbilou, K.;Reichel, L.
通讯作者:
Reichel, L.
DOI:
10.1553/etna_vol50s1
发表时间:
2018
期刊:
--
影响因子:
--
作者:
S. Pozza;M. Pranic;Z. Strakoš
通讯作者:
S. Pozza;M. Pranic;Z. Strakoš
影响因子:
2.1
作者:
Alqahtani, Hessah;Reichel, Lothar
通讯作者:
Reichel, Lothar
DOI:
--
发表时间:
2010
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
S. Baroni;R. Gebauer;O. Bariş Malcioğlu;Y. Saad;P. Umari;Jiawei Xian
通讯作者:
Jiawei Xian
DOI:
10.1016/j.cam.2019.01.015
发表时间:
2019-08-01
影响因子:
2.4
作者:
Cabrera, Omar De la Cruz;Matar, Mona;Reichel, Lothar
通讯作者:
Reichel, Lothar