11573/1721390 - 2024 -
Managing low–acuity patients in an Emergency Department through simulation–based multiobjective optimization using a neural network metamodel Boresta, Marco; Giovannelli, Tommaso; Roma, Massimo - 01a Articolo in rivista
rivista: HEALTH CARE MANAGEMENT SCIENCE (Baltzer Science Publishers BV:PO Box 221, 1400 AE Bussum Netherlands:011 31 35 6954250, EMAIL: publish@baltzer.nl, INTERNET: http://www.baltzer.nl, Fax: 011 31 35 6954258) pp. 415-435 - issn: 1386-9620 - wos: WOS:001242720800001 (1) - scopus: 2-s2.0-85195590066 (0)
11573/1721397 - 2024 -
On the Use of the SYMMBK Algorithm for Computing Negative Curvature Directions Within Newton–Krylov Methods Fasano, Giovanni; Piermarini, Christian; Roma, Massimo - 04b Atto di convegno in volume
congresso: ODS 2023 (Ischia (NA); Italy)
libro: Optimization in Green Sustainability and Ecological Transition ODS, Ischia, Italy, September 4–7, 2023 - (9783031476853; 9783031476860)
11573/1611584 - 2023 -
A simulation-based optimization approach for the calibration of a discrete event simulation model of an emergency department De Santis, A.; Giovannelli, T.; Lucidi, S.; Messedaglia, M.; Roma, M. - 01a Articolo in rivista
rivista: ANNALS OF OPERATIONS RESEARCH (Switzerland: Springer Nature
Dordrecht: Kluwer Academic Publishers.
Amsterdam; Bussum: Baltzer Science Publishers.) pp. 727-756 - issn: 0254-5330 - wos: WOS:000741877100002 (4) - scopus: 2-s2.0-85122828666 (3)
11573/1673345 - 2023 -
A two-objective optimization of ship itineraries for a cruise company Di Pillo, Gianni; Fabiano, Marcello; Lucidi, Stefano; Roma, Massimo - 01a Articolo in rivista
rivista: 4OR (Berlin; Heidelberg: Springer.) pp. - - issn: 1619-4500 - wos: WOS:000938858800001 (0) - scopus: 2-s2.0-85148589239 (0)
11573/1684406 - 2023 -
The ambulance diversion phenomenon in an emergency department network: a case study Piermarini, Christian; Roma, Massimo - 04b Atto di convegno in volume
congresso: OSD 2022 (Florence; Italy)
libro: Optimization and Decision Science: Operations Research, Inclusion and Equity - (978-3-031-28862-3; 978-3-031-28863-0)
11573/1541743 - 2022 -
Determining the optimal piecewise constant approximation for the nonhomogeneous Poisson process rate of Emergency Department patient arrivals De Santis, A.; Giovannelli, T.; Lucidi, S.; Messedaglia, M.; Roma, M. - 01a Articolo in rivista
rivista: FLEXIBLE SERVICES AND MANUFACTURING JOURNAL (Norwell, MA : Springer US) pp. 979-1012 - issn: 1936-6582 - wos: WOS:000627703200001 (6) - scopus: 2-s2.0-85102554303 (8)
libro: arXiv:2101.11138 - ()
11573/1685570 - 2022 -
An Improvement of the Pivoting Strategy in the Bunch and Kaufman Decomposition, Within Truncated Newton Methods Fasano, G.; Roma, M. - 04b Atto di convegno in volume
congresso: 50th International Conference on Optimization and Decision Science (ODS) (Rome)
libro: Optimization in Artificial Intelligence and Data Sciences - (978-3-030-95379-9; 978-3-030-95380-5)
11573/1492511 - 2022 -
Effect of different patient peak arrivals on an Emergency Department via discrete event simulation Fava, G.; Giovannelli, T.; Messedaglia, M.; Roma, M. - 01a Articolo in rivista
rivista: SIMULATION (London; San Diego Calif.: Sage Publications,
Primo editore: San Diego, The Society for Computer Simulation International) pp. 161-181 - issn: 0037-5497 - wos: WOS:000691033900001 (8) - scopus: 2-s2.0-85101834326 (11)
Di Pillo, Gianni; Fabiano, Marcello; Lucidi, Stefano; Roma, Massimo - 01a Articolo in rivista
rivista: OPTIMIZATION LETTERS (Springer Berlin Heidelberg) pp. 1665-1689 - issn: 1862-4472 - wos: WOS:000538213300001 (1) - scopus: 2-s2.0-85086121605 (1)
11573/1433827 - 2020 -
A Class of Approximate Inverse Preconditioners Based on Krylov-Subspace Methods for Large-Scale Nonconvex Optimization Al-Baali, Mehiddin; Caliciotti, Andrea; Fasano, Giovanni; Roma, Massimo - 01a Articolo in rivista
rivista: SIAM JOURNAL ON OPTIMIZATION (Society for Industrial and Applied Mathematics:3600 University City Science Center:Philadelphia, PA 19104:(800)447-7426, (215)382-9800, EMAIL: service@siam.org, INTERNET: http://www.siam.org, Fax: (215)386-7999) pp. 1954-1979 - issn: 1052-6234 - wos: WOS:000576467300008 (1) - scopus: 2-s2.0-85096303027 (1)
11573/1439251 - 2020 -
Issues on the use of a modified Bunch and Kaufman decomposition for large scale Newton’s equation Caliciotti, Andrea; Fasano, Giovanni; Potra, Florian; Roma, Massimo - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. - - issn: 0926-6003 - wos: WOS:000570452300001 (1) - scopus: 2-s2.0-85091145903 (2)
11573/1433829 - 2020 -
Iterative Grossone-Based Computation of Negative Curvature Directions in Large-Scale Optimization De Leone, Renato; Fasano, Giovanni; Roma, Massimo; Sergeyev, Yaroslav D. - 01a Articolo in rivista
rivista: JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS (Plenum Press:Book Customer Service, 233 Spring Street:New York, NY 10013:(212)620-8471, (212)620-8000, EMAIL: info@plenum.com, INTERNET: http://www.plenum.com, Fax: (212)807-1047) pp. 554-589 - issn: 0022-3239 - wos: WOS:000554316700001 (10) - scopus: 2-s2.0-85089135250 (11)
11573/1324249 - 2019 -
How grossone can be helpful to iteratively compute negative curvature directions De Leone, R.; Fasano, G.; Roma, M.; Sergeyev, Y. D. - 04b Atto di convegno in volume
congresso: 12th International Conference on Learning and Intelligent Optimization, LION 12 (Kalamata; Greece)
libro: Learning and Intelligent Optimization - (978-3-030-05347-5; 978-3-030-05348-2)
11573/1118740 - 2018 -
Quasi-Newton based preconditioning and damped quasi-Newton schemes for nonlinear conjugate gradient methods Al-Baali, Mehiddin; Caliciotti, Andrea; Fasano, Giovanni; Roma, Massimo - 04b Atto di convegno in volume
congresso: Fourth international conference on numerical analysis and optimization: Theory, methods, applications and technology transfer (NAOIV) (Sultan Quabos University, Muscat, Oman)
libro: Numerical analysis and optimization - (978-3-319-90025-4; 978-3-319-90026-1)
11573/1049329 - 2018 -
Data and performance profiles applying an adaptive truncation criterion, within linesearch-based truncated Newton methods in large scale nonconvex optimization Caliciotti, Andrea; Fasano, Giovanni; Nash, S. G.; Roma, Massimo - 01a Articolo in rivista
rivista: DATA IN BRIEF (New York : Elsevier Inc.) pp. 246-255 - issn: 2352-3409 - wos: WOS:000449763000032 (9) - scopus: 2-s2.0-85041412367 (11)
11573/1024978 - 2018 -
An adaptive truncation criterion, for linesearch-based truncated Newton methods in large scale nonconvex optimization Caliciotti, Andrea; Fasano, Giovanni; Nash, Stephen G.; Roma, Massimo - 01a Articolo in rivista
rivista: OPERATIONS RESEARCH LETTERS (Elsevier BV:PO Box 211, 1000 AE Amsterdam Netherlands:011 31 20 4853757, 011 31 20 4853642, 011 31 20 4853641, EMAIL: nlinfo-f@elsevier.nl, INTERNET: http://www.elsevier.nl, Fax: 011 31 20 4853598) pp. 7-12 - issn: 0167-6377 - wos: WOS:000425203900002 (13) - scopus: 2-s2.0-85034271367 (13)
11573/1013114 - 2018 -
Preconditioned nonlinear conjugate gradient methods based on a modified secant equation Caliciotti, Andrea; Fasano, Giovanni; Roma, Massimo - 01a Articolo in rivista
rivista: APPLIED MATHEMATICS AND COMPUTATION (New York: Elsevier [etc.]) pp. 196-214 - issn: 0096-3003 - wos: WOS:000415905500014 (14) - scopus: 2-s2.0-85028711700 (18)
11573/968613 - 2017 -
Exploiting damped techniques for nonlinear conjugate gradient methods Al Baali, M; Caliciotti, Andrea; Fasano, Giovanni; Roma, Massimo - 01a Articolo in rivista
rivista: MATHEMATICAL METHODS OF OPERATIONS RESEARCH ([Heidelberg] : Physica-Verl.) pp. 501-522 - issn: 1432-5217 - wos: WOS:000423125800005 (13) - scopus: 2-s2.0-85020081086 (13)
11573/941817 - 2017 -
Novel preconditioners based on quasi–Newton updates for nonlinear conjugate gradient methods Caliciotti, Andrea; Giovanni, Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: OPTIMIZATION LETTERS (Springer Berlin Heidelberg) pp. 835-853 - issn: 1862-4472 - wos: WOS:000400384200013 (14) - scopus: 2-s2.0-84978137701 (18)
11573/935557 - 2016 -
Preconditioning strategies for nonlinear conjugate gradient methods, based on quasi-Newton updates Caliciotti, Andrea; Fasano, Giovanni; Roma, Massimo - 04b Atto di convegno in volume
congresso: 2nd International Conference on Numerical Computations: Theory and Algorithms, NUMTA 2016 (Pizzo Calabro, Italy)
libro: Numerical computations: theory and algorithms (NUMTA–2016). Proceedings of the 2nd international conference “Numerical computations: theory and agorithms” - (9780735414389)
11573/818717 - 2016 -
A novel class of approximate inverse preconditioners for large positive definite linear systems in optimization Giovanni, Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. 399-429 - issn: 0926-6003 - wos: WOS:000385183100005 (7) - scopus: 2-s2.0-84934784427 (7)
11573/807074 - 2016 -
A derivative-free approach for a simulation-based optimization problem in healthcare Lucidi, Stefano; Maurici, Massimo; Paulon, Luca; Rinaldi, Francesco; Roma, Massimo - 01a Articolo in rivista
rivista: OPTIMIZATION LETTERS (Springer Berlin Heidelberg) pp. 219-235 - issn: 1862-4472 - wos: WOS:000369946200002 (14) - scopus: 2-s2.0-84957442907 (19)
11573/935534 - 2016 -
A simulation-based multiobjective optimization approach for health care service management Lucidi, Stefano; Maurici, Massimo; Paulon, Luca; Rinaldi, Francesco; Roma, Massimo - 01a Articolo in rivista
rivista: IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING (New York : Institute of Electrical and Electronics Engineers, c2004-) pp. 1480-1491 - issn: 1545-5955 - wos: WOS:000385723800008 (20) - scopus: 2-s2.0-84992104267 (24)
11573/643794 - 2013 -
Analyzing the main and the second order effects of operational policies on the warehouse productivity A., Huerta; S., Brizi; M., Elizondo; Roma, Massimo - 04b Atto di convegno in volume
congresso: 2013 Winter Simulation Conference (Washington, D.C, USA)
libro: Proceedings of the 2013 Winter Simulation Conference: Simulation: Making Decisions in a Complex World - (9781479920778)
11573/220315 - 2013 -
Preconditioning Newton-Krylov methods in nonconvex large scale optimization Giovanni, Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. 253-290 - issn: 0926-6003 - wos: WOS:000324331300001 (19) - scopus: 2-s2.0-84884820841 (20)
11573/509936 - 2012 -
Quasi-Newton Updates for Preconditioned Nonlinear Conjugate Gradient Methods G., Fasano; Roma, Massimo - 02a Capitolo o Articolo
libro: Recent Advances in Nonlinear Optimization and Equilibrium Problems: a tribute to Marco D'Apuzzo - (9788854856875)
11573/481940 - 2012 -
Preconditioning Large Indefinite Linear Systems Giovanni, Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: MAGALLAT GAMI'AT AL-SULTAN QABUS LI-L-BUHUT AL-'ILMIYYAT AL-'ULUM WA-AL-HANDASAT (Masqat: Gami’at al-Sultān Qābūs) pp. 63-79 - issn: 1027-524X - wos: (0) - scopus: (0)
11573/149340 - 2009 -
LARGE SCALE UNCONSTRAINED OPTIMIZATION Roma, Massimo - 02a Capitolo o Articolo
libro: ENCYCLOPEDIA OF OPTIMIZATION - (9780387747583; 9780387747590)
11573/46936 - 2007 -
Iterative computation of negative curvature directions in large scale optimization Giovanni, Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. 81-104 - issn: 0926-6003 - wos: WOS:000248607700006 (17) - scopus: 2-s2.0-34547592106 (18)
11573/394969 - 2006 -
AN APPROXIMATE INVERSE PRECONDITIONER IN TRUNCATED NEWTON METHODS FOR LARGE SCALE OPTIMIZATION G., Fasano; Roma, Massimo - 01a Articolo in rivista
rivista: COMMUNICATIONS TO SIMAI CONGRESS (Roma : SIMAI) pp. 1-3 - issn: 1827-9015 - wos: (0) - scopus: (0)
11573/44732 - 2005 -
Dynamic scaling based preconditioning for truncated Newton methods in large scale unconstrained optimization Roma, Massimo - 01a Articolo in rivista
rivista: OPTIMIZATION METHODS & SOFTWARE (Basingstoke, United Kingdom: Taylor & Francis Limited
Reading: Gordon & Breach Science Publishers) pp. 693-713 - issn: 1055-6788 - wos: WOS:000234138300005 (11) - scopus: 2-s2.0-29744436841 (10)
11573/254855 - 2000 -
EXPLOITING NEGATIVE CURVATURE DIRECTIONS IN LINESEARCH METHODS FOR UNCONSTRAINED OPTIMIZATION Gould, N.; Lucidi, Stefano; Roma, Massimo; Toint, P. - 01a Articolo in rivista
rivista: OPTIMIZATION METHODS & SOFTWARE (Basingstoke, United Kingdom: Taylor & Francis Limited
Reading: Gordon & Breach Science Publishers) pp. 75-98 - issn: 1055-6788 - wos: WOS:000165321100005 (33) - scopus: 2-s2.0-0034450431 (34)
11573/245366 - 1999 -
SOLVING THE TRUST-REGION SUBPROBLEM USING THE LANCZOS METHOD Gould, N.; Lucidi, Stefano; Roma, Massimo; Toint, P. - 01a Articolo in rivista
rivista: SIAM JOURNAL ON OPTIMIZATION (Society for Industrial and Applied Mathematics:3600 University City Science Center:Philadelphia, PA 19104:(800)447-7426, (215)382-9800, EMAIL: service@siam.org, INTERNET: http://www.siam.org, Fax: (215)386-7999) pp. 504-525 - issn: 1052-6234 - wos: WOS:000079854000011 (198) - scopus: 2-s2.0-0033437435 (200)
11573/246539 - 1998 -
A CONTROLLED RANDOM SEARCH ALGORITHM WITH LOCAL NEWTON-TYPE SEARCH FOR GLOBAL OPTIMIZATION Di Pillo, Gianni; Lucidi, Stefano; Palagi, Laura; Roma, Massimo - 02a Capitolo o Articolo
libro: HIGH PERFORMANCE ALGORITHM AND SOFTWARE IN NONLINEAR OPTIMIZATION - ()
11573/246121 - 1998 -
A LINESEARCH ALGORITHM WITH MEMORY FOR UNCONSTRAINED OPTIMIZATION Gould, N.; Lucidi, Stefano; Roma, Massimo; Toint, P. - 02a Capitolo o Articolo
libro: HIGH PERFORMANCE ALGORITHMS AND SOFTWARE IN NONLINEAR OPTIMIZATION - ()
11573/246427 - 1998 -
ON SOME PROPERTIES OF QUADRATIC PROGRAMS WITH A CONVEX QUADRATIC CONSTRAINT Lucidi, Stefano; Palagi, Laura; Roma, Massimo - 01a Articolo in rivista
rivista: SIAM JOURNAL ON OPTIMIZATION (Society for Industrial and Applied Mathematics:3600 University City Science Center:Philadelphia, PA 19104:(800)447-7426, (215)382-9800, EMAIL: service@siam.org, INTERNET: http://www.siam.org, Fax: (215)386-7999) pp. 105-122 - issn: 1052-6234 - wos: WOS:000071938800005 (26) - scopus: 2-s2.0-0032326764 (34)
11573/257186 - 1998 -
CURVILINEAR STABILIZATION TECHNIQUES FOR TRUNCATED NEWTON METHODS IN LARGE SCALE UNCONSTRAINED OPTIMIZATION Lucidi, Stefano; Rochetich, F.; Roma, Massimo - 01a Articolo in rivista
rivista: SIAM JOURNAL ON OPTIMIZATION (Society for Industrial and Applied Mathematics:3600 University City Science Center:Philadelphia, PA 19104:(800)447-7426, (215)382-9800, EMAIL: service@siam.org, INTERNET: http://www.siam.org, Fax: (215)386-7999) pp. 916-939 - issn: 1052-6234 - wos: WOS:000075852000003 (37) - scopus: 2-s2.0-0032327057 (38)
11573/16168 - 1997 -
Numerical Experiences with New Truncated Newton Methods in Large
Scale Unconstrained Optimization Roma, Massimo; Lucidi, Stefano - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. 71-87 - issn: 0926-6003 - wos: WOS:A1997XT39000005 (10) - scopus: 2-s2.0-0030672155 (10)
11573/247336 - 1996 -
NONMONOTONE CURVILINEAR LINE SEARCH METHODS FOR UNCONSTRAINED OPTIMIZATION Ferris, M. C.; Roma, Massimo; Lucidi, Stefano - 01a Articolo in rivista
rivista: COMPUTATIONAL OPTIMIZATION AND APPLICATIONS (Kluwer Academic Publishers / Massachusetts:PO Box 358, Accord Station:Hingham, MA 02018:(617)871-6600) pp. 117-136 - issn: 0926-6003 - wos: (0) - scopus: 2-s2.0-0030243966 (26)
11573/151754 - 1995 -
A Modified Truncated Newton Method Which Uses Negative Curvature
Directions for Large Scale Unconstrained Problems Lucidi, Stefano; Rochetich, F.; Roma, Massimo - 02a Capitolo o Articolo
libro: Operations Research Proceedings 1994 - (9783540587934)
11573/149109 - 1994 -
Nonmonotone Conjugate Gradient Methods for Optimization Lucidi, Stefano; Roma, Massimo - 02a Capitolo o Articolo
libro: System Modelling and Optimization - (9783540198932)
11573/19403 - 1990 -
Stochastic regularization of linear equations and the realization of Gaussian fields Piccioni, Mauro; Roma, Massimo - 01a Articolo in rivista
rivista: JOURNAL OF MULTIVARIATE ANALYSIS (Academic Press Incorporated:6277 Sea Harbor Drive:Orlando, FL 32887:(800)543-9534, (407)345-4100, EMAIL: ap@acad.com, INTERNET: http://www.idealibrary.com, Fax: (407)352-3445) pp. 143-150 - issn: 0047-259X - wos: WOS:A1990DB57100009 (1) - scopus: 2-s2.0-45149136805 (1)