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pro vyhledávání: '"Frutos, Javier"'
Optimal bounds for POD approximations of infinite horizon control problems based on time derivatives
In this paper we consider the numerical approximation of infinite horizon problems via the dynamic programming approach. The value function of the problem solves a Hamilton-Jacobi-Bellman (HJB) equation that is approximated by a fully discrete method
Externí odkaz:
http://arxiv.org/abs/2310.10552
AI-Dentify: Deep learning for proximal caries detection on bitewing x-ray -- HUNT4 Oral Health Study
Autor:
de Frutos, Javier Pérez, Helland, Ragnhild Holden, Desai, Shreya, Nymoen, Line Cathrine, Langø, Thomas, Remman, Theodor, Sen, Abhijit
Publikováno v:
BMC Oral Health 24, 344 (2024)
Background: Dental caries diagnosis requires the manual inspection of diagnostic bitewing images of the patient, followed by a visual inspection and probing of the identified dental pieces with potential lesions. Yet the use of artificial intelligenc
Externí odkaz:
http://arxiv.org/abs/2310.00354
Autor:
de Frutos, Javier Pérez, Pedersen, André, Pelanis, Egidijus, Bouget, David, Survarachakan, Shanmugapriya, Langø, Thomas, Elle, Ole-Jakob, Lindseth, Frank
Publikováno v:
PLoS ONE 18(2): e0282110 (2023)
Purpose: This study aims to explore training strategies to improve convolutional neural network-based image-to-image deformable registration for abdominal imaging. Methods: Different training strategies, loss functions, and transfer learning schemes
Externí odkaz:
http://arxiv.org/abs/2211.15717
In this paper we study a discrete-time semidiscretization of an infinite time horizon noncooperative $N$-player differential game. We prove that as the discretization time step approaches zero the discrete-time value function approximate the value fu
Externí odkaz:
http://arxiv.org/abs/2112.03153
Autor:
de Frutos, Javier, Novo, Julia
In this paper we get error bounds for fully discrete approximations of infinite horizon problems via the dynamic programming approach. It is well known that considering a time discretization with a positive step size $h$ an error bound of size $h$ ca
Externí odkaz:
http://arxiv.org/abs/2111.07371
Autor:
Byrne, Sonia, Pećnik, Ninoslava, Bernedo, Isabel María, Kodysova, Eliška, Stanke, Koraljka Modic, de Frutos, Javier, Rodrigo, María José
Publikováno v:
In Children and Youth Services Review August 2024 163
Autor:
de Frutos, Javier, Gaton, Victor
Publikováno v:
Journal of Computational and Applied Mathematics Volume 394, 1 October 2021, 113541
This paper concerns the design of a Fourier based pseudospectral numerical method for the model of European Option Pricing with transaction costs under Exponential Utility derived by Davis, Panas and Zariphopoulou. Computing the option price involves
Externí odkaz:
http://arxiv.org/abs/2103.05369
Autor:
Pedersen, André, Valla, Marit, Bofin, Anna M., de Frutos, Javier Pérez, Reinertsen, Ingerid, Smistad, Erik
Deep convolutional neural networks (CNNs) are the current state-of-the-art for digital analysis of histopathological images. The large size of whole-slide microscopy images (WSIs) requires advanced memory handling to read, display and process these i
Externí odkaz:
http://arxiv.org/abs/2011.06033
Publikováno v:
Automatica, March 2021, 109411
We analyze a differential game with spatially distributed controls to study a multiregional transboundary pollution problem. The dynamics of the state variable (pollution stock) is defined by a two dimensional parabolic partial differential equation.
Externí odkaz:
http://arxiv.org/abs/1912.00481
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