Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Massimo Roma"'
Publikováno v:
Data in Brief, Vol 17, Iss , Pp 246-255 (2018)
In this paper, we report data and experiments related to the research article entitled “An adaptive truncation criterion, for linesearch-based truncated Newton methods in large scale nonconvex optimization” by Caliciotti et al. [1]. In particular
Externí odkaz:
https://doaj.org/article/f25d585733c4447b889f34fbe2c0a733
Autor:
Giovanni Fasano, Massimo Roma
Publikováno v:
Sultan Qaboos University Journal for Science, Vol 17, Iss 1, Pp 63-79 (2011)
After briefly recalling some relevant approaches for preconditioning large symmetric linear systems, we describe a novel class of preconditioners. Our proposal is tailored for large indefinite linear systems, which arise very frequently in many diffe
Externí odkaz:
https://doaj.org/article/a4953344367b4e058c4ec42cd5fbda36
Publikováno v:
4OR.
This paper deals with the problem of cruise itinerary planning which plays a central role in worldwide cruise ship tourism. In particular, the Day-by-day Cruise Itinerary Optimization (DCIO) problem is considered. Assuming that a cruise has been plan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ffb1ae2fb7c3dbf1eb371378e1b282a
https://doi.org/10.1007/s10288-023-00536-6
https://doi.org/10.1007/s10288-023-00536-6
Publikováno v:
Computational Optimization and Applications. 77:627-651
In this work, we deal with Truncated Newton methods for solving large scale (possibly nonconvex) unconstrained optimization problems. In particular, we consider the use of a modified Bunch and Kaufman factorization for solving the Newton equation, at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::951c4e6b81f1a88fe1ee994cb45055dc
https://doi.org/10.1007/s10589-020-00225-8
https://doi.org/10.1007/s10589-020-00225-8
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdb5faeddcd421f1a5bbc5da77c1e2e1
https://doi.org/10.2139/ssrn.4154641
https://doi.org/10.2139/ssrn.4154641
Autor:
Giovanni Fasano, Massimo Roma
Publikováno v:
AIRO Springer Series ISBN: 9783030953799
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::196bc155e2f54639e8ed7d4ec630a805
https://doi.org/10.1007/978-3-030-95380-5_5
https://doi.org/10.1007/978-3-030-95380-5_5
Modeling the arrival process to an Emergency Department (ED) is the first step of all studies dealing with the patient flow within the ED. Many of them focus on the increasing phenomenon of ED overcrowding, which is afflicting hospitals all over the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ef15ac69b02d9fba5c75caa957aed0f2
http://arxiv.org/abs/2101.11138
http://arxiv.org/abs/2101.11138
A cruise company faces three decision problems: at a strategic level, to decide in which maritime area and in which season window to locate each ship of its fleet; at a tactical level, given a ship in a maritime area and in a season window, to decide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5031e81fd837e3d15c964f04ae4fadba
http://hdl.handle.net/11573/1408726
http://hdl.handle.net/11573/1408726
We introduce a class of positive definite preconditioners for the solution of large symmetric indefinite linear systems or sequences of such systems, in optimization frameworks. The preconditioners...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ab9476b8bde473ad78217adb38954b1
http://hdl.handle.net/11573/1433827
http://hdl.handle.net/11573/1433827
We consider an iterative computation of negative curvature directions, in large-scale unconstrained optimization frameworks, needed for ensuring the convergence toward stationary points which satisfy second-order necessary optimality conditions. We s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44e76e86f7c45b736e9293cf82ae21fa
http://hdl.handle.net/11573/1433829
http://hdl.handle.net/11573/1433829