Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Julen Álvarez-Aramberri"'
Publikováno v:
Memetic Computing. 10:279-289
Solving ill-posed continuous, global optimization problems is challenging. No well-established methods are available to handle the objective intensity that appears when studying the inversion of non-invasive tumor tissue diagnosis or geophysical appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4348607015eb2095d9d245b0de4d18d
https://doi.org/10.1007/s12293-018-0258-5
https://doi.org/10.1007/s12293-018-0258-5
Publikováno v:
BIRD: BCAM's Institutional Repository Data
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Many global optimization problems arising naturally in science and engineering exhibit some form of intrinsic ill-posedness, such as multimodality and insensitivity. Severe ill-posedness precludes the use of standard regularization techniques and nec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75b8920d5323925a8cf466eb001dcdf7
https://doi.org/10.1016/j.jocs.2019.04.005
https://doi.org/10.1016/j.jocs.2019.04.005
Publikováno v:
BIRD: BCAM's Institutional Repository Data
instname
Journal of Computational Science
instname
Journal of Computational Science
In some geophysical problems, it is sometimes possible to divide the subsurface resistivity distribution as a one dimensional (1D) contribution plus some two dimensional (2D) inhomogeneities. Assuming this scenario, we split the electromagnetic field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f32f475694fc8354d32138cc77fa84c4
https://doi.org/10.1016/j.jocs.2015.02.005
https://doi.org/10.1016/j.jocs.2015.02.005
Publikováno v:
ICCS
Procedia Computer Science
BIRD: BCAM's Institutional Repository Data
instname
Procedia Computer Science
BIRD: BCAM's Institutional Repository Data
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The objective of traditional goal-oriented strategies is to construct an optimal mesh that mini- mizes the problem size needed to achieve a user prescribed tolerance error for a given quantity of interest (QoI). Typical geophysical resistivity measur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ed2d1f3c012176be3e5acd17f55e368
https://doi.org/10.1016/j.procs.2015.05.236
https://doi.org/10.1016/j.procs.2015.05.236
Publikováno v:
ICCS
For the simulation of wave propagation problems, it is necessary to truncate the computational domain. Perfectly Matched Layers are often employed for that purpose, especially in high contrast layered materials where absorbing boundary conditions are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c91ea3e8692747f09b183a83879f3be1
Publikováno v:
BIRD: BCAM's Institutional Repository Data
instname
Journal of Computational Science
instname
Journal of Computational Science
We propose a new memetic strategy that can solve the multi-physics, complex inverse problems, formulated as the multi-objective optimization ones, in which objectives are misfits between the measured and simulated states of various governing processe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a1010dd8527147ecd2a986f19c1ba99
http://hdl.handle.net/20.500.11824/328
http://hdl.handle.net/20.500.11824/328
Autor:
David Pardo, Julen Álvarez-Aramberri, Maciej Paszyński, Lisandro Dalcin, Victor M. Calo, Nathan Collier
Publikováno v:
ICCS
Round-off error analysis has been historically studied by analyzing the condition number of the associated matrix. By controlling the size of the condition number, it is possible to guarantee a prescribed round-off error tolerance. However, the oppos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14b41fbb685f5e65b5bcd61c7d30a5fb
Publikováno v:
BIRD: BCAM's Institutional Repository Data
instname
International Journal of Applied Mathematics and Computer Science, Vol 25, Iss 3, Pp 483-498 (2015)
International Journal of Applied Mathematics and Computer Science
instname
International Journal of Applied Mathematics and Computer Science, Vol 25, Iss 3, Pp 483-498 (2015)
International Journal of Applied Mathematics and Computer Science
The paper discusses the complex, agent-oriented hierarchic memetic strategy (HMS) dedicated to solving inverse parametric problems. The strategy goes beyond the idea of two-phase global optimization algorithms. The global search performed by a tree o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62fc5898a93082e85da287fdbfb53b2b
http://hdl.handle.net/20.500.11824/89
http://hdl.handle.net/20.500.11824/89
Publikováno v:
Computers & Mathematics with Applications
This paper provides theoretical estimates that quantify and clarify the savings associated to the use of element-level static condensation as a first step of an iterative solver. These estimates are verified numerically. The numerical evidence shows
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5daa1173ae4831dbe340e76f4713c22
Publikováno v:
Procedia Computer Science
ICCS 2013-International Conference on Computational Science
ICCS 2013-International Conference on Computational Science, Jun 2013, Barcelona, Spain. pp.1564-1573, ⟨10.1016/j.procs.2013.05.324⟩
ICCS
ICCS 2013-International Conference on Computational Science
ICCS 2013-International Conference on Computational Science, Jun 2013, Barcelona, Spain. pp.1564-1573, ⟨10.1016/j.procs.2013.05.324⟩
ICCS
International audience; The inversion of magnetotelluric measurements require the computation of the quantity of interest (solution at the receivers) at different positions. Using a multigoal-oriented adaptive strategy for an hp Finite Element algori
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bf23f47d96db8d2fe9290438d62a909
https://inria.hal.science/hal-00944838
https://inria.hal.science/hal-00944838