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pro vyhledávání: '"Daužickaitė, Ieva"'
Autor:
Carson, Erin, Daužickaitė, Ieva
Various approaches to iterative refinement (IR) for least-squares problems have been proposed in the literature and it may not be clear which approach is suitable for a given problem. We consider three approaches to IR for least-squares problems when
Externí odkaz:
http://arxiv.org/abs/2405.18363
Autor:
Carson, Erin, Daužickaitė, Ieva
We consider the split-preconditioned FGMRES method in a mixed precision framework, in which four potentially different precisions can be used for computations with the coefficient matrix, application of the left preconditioner, application of the rig
Externí odkaz:
http://arxiv.org/abs/2303.11901
Autor:
Carson, Erin, Daužickaitė, Ieva
Low rank matrix approximations appear in a number of scientific computing applications. We consider the Nystr\"{o}m method for approximating a positive semidefinite matrix $A$. In the case that $A$ is very large or its entries can only be accessed on
Externí odkaz:
http://arxiv.org/abs/2205.13355
Publikováno v:
On time-parallel preconditioning for the state formulation of incremental weak constraint 4D-Var. 2021
Using a high degree of parallelism is essential to perform data assimilation efficiently. The state formulation of the incremental weak constraint four-dimensional variational data assimilation method allows parallel calculations in the time dimensio
Externí odkaz:
http://arxiv.org/abs/2105.09802
There is growing awareness that errors in the model equations cannot be ignored in data assimilation methods such as four-dimensional variational assimilation (4D-Var). If allowed for, more information can be extracted from observations, longer time
Externí odkaz:
http://arxiv.org/abs/2101.07249
We consider the large-sparse symmetric linear systems of equations that arise in the solution of weak constraint four-dimensional variational data assimilation, a method of high interest for numerical weather prediction. These systems can be written
Externí odkaz:
http://arxiv.org/abs/1908.07949
Akademický článek
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Akademický článek
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Autor:
Daužickaitė, Ieva
Beam Angle Optimization for Intensity-Modulated Radiotherapy Conflicting criteria arise when planning intensity - modulated radiation therapy for cancer treatment. That is delivering homogeneous and sufficient dose of ionizing radiation to the target
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::c4665f45c41fd7caa7a4dcbd47241f64
https://repository.vu.lt/VU:ELABAETD23312343&prefLang=en_US
https://repository.vu.lt/VU:ELABAETD23312343&prefLang=en_US