Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Stefano Massei"'
Publikováno v:
SIAM Journal on Matrix Analysis and Applications. 43:151-177
Publikováno v:
Numerical Linear Algebra with Applications. 29
Autor:
Stefano Massei, Leonardo Robol
Publikováno v:
BIT Numerical Mathematics, 61(1), 237-273. Springer
Evaluating the action of a matrix function on a vector, that is $$x=f({\mathcal {M}})v$$ x = f ( M ) v , is an ubiquitous task in applications. When $${\mathcal {M}}$$ M is large, one usually relies on Krylov projection methods. In this paper, we pro
Autor:
Stefano Massei
Publikováno v:
BIT Numerical Mathematics, 62, 195-220. Springer
Various applications in numerical linear algebra and computer science are related to selecting the $$r\times r$$ r × r submatrix of maximum volume contained in a given matrix $$A\in \mathbb R^{n\times n}$$ A ∈ R n × n . We propose a new greedy al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ff097de73cb386c6cc0287fb8edba0
http://hdl.handle.net/11568/1136972
http://hdl.handle.net/11568/1136972
Autor:
Stefano Massei, Leonardo Robol
Various numerical linear algebra problems can be formulated as evaluating bivariate function of matrices. The most notable examples are the Fr\'echet derivative along a direction, the evaluation of (univariate) functions of Kronecker-sum-structured m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e764bf40c36468ee21e15508bd536efa
http://arxiv.org/abs/2104.00396
http://arxiv.org/abs/2104.00396
Publikováno v:
Numerical Linear Algebra and Applications
Numerical Linear Algebra with Applications, 28(1):e2339. Wiley
Numerical Linear Algebra with Applications, 28(1):e2339. Wiley
Block Krylov subspace methods (KSMs) comprise building blocks in many state-of-the-art solvers for large-scale matrix equations as they arise, for example, from the discretization of partial differential equations. While extended and rational block K
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c8312968aba68133d1eafcfb1c5c86b
https://hdl.handle.net/21.11116/0000-0007-8EE7-521.11116/0000-0005-D5BC-721.11116/0000-0005-D5BE-5
https://hdl.handle.net/21.11116/0000-0007-8EE7-521.11116/0000-0005-D5BC-721.11116/0000-0005-D5BE-5
Publikováno v:
Foundations of Data Science, 2(4), 487-512. American Institute of Mathematical Sciences
Many techniques for data science and uncertainty quantification demand efficient tools to handle Gaussian random fields, which are defined in terms of their mean functions and covariance operators. Recently, parameterized Gaussian random fields have
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2071c01b367ce509d7038b1a2ce856f
https://research.tue.nl/nl/publications/27ac9145-c928-47b6-a576-3fa629b063b2
https://research.tue.nl/nl/publications/27ac9145-c928-47b6-a576-3fa629b063b2
Publikováno v:
ACC
Traditional model reduction derives reduced models from large-scale systems in a one-time computationally expensive offline (training) phase and then evaluates reduced models in an online phase to rapidly predict system outputs; however, this offline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f86118a5b4b23da0b26ea87dabbf5bc
http://hdl.handle.net/11568/1136978
http://hdl.handle.net/11568/1136978
Autor:
Leonardo Robol, Stefano Massei
Publikováno v:
Linear Algebra and its Applications. 516:212-242
Given matrices 𝐴 and 𝐵 such that 𝐵 = 𝑓(𝐴), where 𝑓(𝑧) is a holomorphic function, we analyze the relation between the singular values of the off-diagonal submatrices of 𝐴 and 𝐵. We provide a family of bounds which depend on
Publikováno v:
Математический сборник. 208:56-74