Zobrazeno 1 - 10
of 167
pro vyhledávání: '"Lombardi, Damiano"'
Publikováno v:
Comptes Rendus. Mathématique, Vol 358, Iss 9-10, Pp 981-987 (2021)
This note adresses the following segmentation problem in medical imaging: minimize expert intervention for semi-automatic segmentation process. Using a reduced basis, we have an a priori knowledge of the objet we want to identify on the images, like
Externí odkaz:
https://doaj.org/article/7ae5996e7aaf4ac3a95066a0ee416b2b
Autor:
Battisti, Beatrice, Blickhan, Tobias, Enchéry, Guillaume, Ehrlacher, Virginie, Lombardi, Damiano, Mula, Olga
The aim of this work is to build a reduced-order model for parametrized porous media equations. The main challenge of this type of problems is that the Kolmogorov width of the solution manifold typically decays quite slowly and thus makes usual linea
Externí odkaz:
http://arxiv.org/abs/2205.02721
Publikováno v:
SIAM Journal on Scientific Computing Vol. 44 Is. 3, 2022
We develop a mathematical and numerical framework to solve state estimation problems for applications that present variations in the shape of the spatial domain. This situation arises typically in a biomedical context where inverse problems are posed
Externí odkaz:
http://arxiv.org/abs/2106.09421
In the present work, a method is proposed in order to compute a Canonical Polyadic (CP) approximation of a given tensor. It is based on a greedy method and an adaptation of the TT-SVD method. The proposed approach can be straightforwardly extended to
Externí odkaz:
http://arxiv.org/abs/2011.09725
The present contribution deals with the estimation of haemodynamics Quantities of Interest by exploiting Ultrasound Doppler measurements. A fast method is proposed, based on the PBDW method. Several methodological contributions are described: a sub-m
Externí odkaz:
http://arxiv.org/abs/2006.04174
Optimal Transport (OT) problems arise in a wide range of applications, from physics to economics. Getting numerical approximate solution of these problems is a challenging issue of practical importance. In this work, we investigate the relaxation of
Externí odkaz:
http://arxiv.org/abs/1905.05663
This paper deals with the problem of building fast and reliable 3D reconstruction methods for blood flows for which partial information is given by Doppler ultrasound measurements. This task is of interest in medicine since it could enrich the availa
Externí odkaz:
http://arxiv.org/abs/1904.13367
Akademický článek
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As a consequence of Bloch's theorem, the numerical computation of the fermionic ground state density matrices and energies of periodic Schrodinger operators involves integrals over the Brillouin zone. These integrals are difficult to compute numerica
Externí odkaz:
http://arxiv.org/abs/1805.07144
Autor:
Ehrlacher, Virginie, Lombardi, Damiano
A numerical method is proposed to solve the full-Eulerian time-dependent Vlasov-Poisson system in high dimension. The algorithm relies on the construction of a tensor decomposition of the solution whose rank is adapted at each time step. This decompo
Externí odkaz:
http://arxiv.org/abs/1606.06648