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Stefania Bellavia
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2020 – today
- 2024
- [j36]Fabrizio Argenti
, Stefania Bellavia, Marco Fontani
A Proposed Workflow for the Restoration of Image Artifacts in Forensic Applications. IEEE Access 12: 88303-88321 (2024) - [j35]Stefania Bellavia
An investigation of stochastic trust-region based algorithms for finite-sum minimization. Optim. Methods Softw. 39(5): 937-966 (2024) - 2023
- [j34]Stefania Bellavia, Benedetta Morini
On the Convergence Properties of a Stochastic Trust-Region Method with Inexact Restoration. Axioms 12(1): 38 (2023) - [j33]Stefania Bellavia, Natasa Krejic, Benedetta Morini
A stochastic first-order trust-region method with inexact restoration for finite-sum minimization. Comput. Optim. Appl. 84(1): 53-84 (2023) - [j32]Stefania Bellavia
The Impact of Noise on Evaluation Complexity: The Deterministic Trust-Region Case. J. Optim. Theory Appl. 196(2): 700-729 (2023) - [i9]Stefania Bellavia, Davide Palitta, Margherita Porcelli, Valeria Simoncini:
Regularized methods via cubic subspace minimization for nonconvex optimization. CoRR abs/2306.14290 (2023) - [i8]Stefania Bellavia, Greta Malaspina
Inexact Newton methods with matrix approximation by sampling for nonlinear least-squares and systems. CoRR abs/2310.05501 (2023) - [i7]Stefania Bellavia, Francesco Della Santa, Alessandra Papini:
Alternate Training of Shared and Task-Specific Parameters for Multi-Task Neural Networks. CoRR abs/2312.16340 (2023) - 2022
- [j31]Stefania Bellavia
Trust-region algorithms: Probabilistic complexity and intrinsic noise with applications to subsampling techniques. EURO J. Comput. Optim. 10: 100043 (2022) - [j30]Stefania Bellavia, Gianmarco Gurioli
Adaptive regularization for nonconvex optimization using inexact function values and randomly perturbed derivatives. J. Complex. 68: 101591 (2022) - 2021
- [j29]Stefania Bellavia
A Relaxed Interior Point Method for Low-Rank Semidefinite Programming Problems with Applications to Matrix Completion. J. Sci. Comput. 89(2): 46 (2021) - [c3]Stefania Bellavia, Gianmarco Gurioli
Quadratic and Cubic Regularisation Methods with Inexact function and Random Derivatives for Finite-Sum Minimisation. ICCSA (Workshops) 2021: 258-267 - [i6]Stefania Bellavia, Gianmarco Gurioli, Benedetta Morini, Philippe L. Toint:
Quadratic and Cubic Regularisation Methods with Inexact function and Random Derivatives for Finite-Sum Minimisation. CoRR abs/2104.00592 (2021) - [i5]Stefania Bellavia, Gianmarco Gurioli, Benedetta Morini, Philippe L. Toint:
The Impact of Noise on Evaluation Complexity: The Deterministic Trust-Region Case. CoRR abs/2104.02519 (2021) - [i4]Stefania Bellavia, Natasa Krejic, Benedetta Morini, Simone Rebegoldi:
A stochastic first-order trust-region method with inexact restoration for finite-sum minimization. CoRR abs/2107.03129 (2021) - 2020
- [j28]Stefania Bellavia, Natasa Krejic
Inexact restoration with subsampled trust-region methods for finite-sum minimization. Comput. Optim. Appl. 76(3): 701-736 (2020) - [i3]Stefania Bellavia, Gianmarco Gurioli:
Complexity Analysis of a Stochastic Cubic Regularisation Method under Inexact Gradient Evaluations and Dynamic Hessian Accuracy. CoRR abs/2001.10827 (2020)
2010 – 2019
- 2019
- [j27]Stefania Bellavia, Jacek Gondzio
An inexact dual logarithmic barrier method for solving sparse semidefinite programs. Math. Program. 178(1-2): 109-143 (2019) - [j26]Stefania Bellavia, Gianmarco Gurioli
Adaptive Regularization Algorithms with Inexact Evaluations for Nonconvex Optimization. SIAM J. Optim. 29(4): 2881-2915 (2019) - [i2]Stefania Bellavia, Jacek Gondzio, Margherita Porcelli:
A relaxed interior point method for low-rank semidefinite programming problems. CoRR abs/1909.06099 (2019) - 2018
- [j25]Stefania Bellavia
On an Elliptical Trust-Region Procedure for Ill-Posed Nonlinear Least-Squares Problems. J. Optim. Theory Appl. 178(3): 824-859 (2018) - [j24]Stefania Bellavia, Serge Gratton, Elisa Riccietti
A Levenberg-Marquardt method for large nonlinear least-squares problems with dynamic accuracy in functions and gradients. Numerische Mathematik 140(3): 791-825 (2018) - [i1]Stefania Bellavia, Gianmarco Gurioli, Benedetta Morini, Philippe L. Toint:
Deterministic and stochastic inexact regularization algorithms for nonconvex optimization with optimal complexity. CoRR abs/1811.03831 (2018) - 2016
- [j23]Stefania Bellavia, Benedetta Morini, Elisa Riccietti
On an adaptive regularization for ill-posed nonlinear systems and its trust-region implementation. Comput. Optim. Appl. 64(1): 1-30 (2016) - [j22]Stefania Bellavia, Valentina De Simone, Daniela di Serafino
On the update of constraint preconditioners for regularized KKT systems. Comput. Optim. Appl. 65(2): 339-360 (2016) - 2015
- [j21]Stefania Bellavia
On affine-scaling inexact dogleg methods for bound-constrained nonlinear systems. Optim. Methods Softw. 30(2): 276-300 (2015) - [j20]Stefania Bellavia, Valentina De Simone, Daniela di Serafino
Updating Constraint Preconditioners for KKT Systems in Quadratic Programming Via Low-Rank Corrections. SIAM J. Optim. 25(3): 1787-1808 (2015) - 2014
- [j19]Stefania Bellavia
New updates of incomplete LU factorizations and applications to large nonlinear systems. Optim. Methods Softw. 29(2): 321-340 (2014) - 2013
- [j18]Stefania Bellavia
A Matrix-Free Preconditioner for Sparse Symmetric Positive Definite Systems and Least-Squares Problems. SIAM J. Sci. Comput. 35(1) (2013) - 2012
- [j17]Stefania Bellavia
Constrained Dogleg methods for nonlinear systems with simple bounds. Comput. Optim. Appl. 53(3): 771-794 (2012) - [j16]Stefania Bellavia
A Preconditioning Framework for Sequences of Diagonally Modified Linear Systems Arising in Optimization. SIAM J. Numer. Anal. 50(6): 3280-3302 (2012) - 2011
- [j15]Stefania Bellavia
Inexact Newton methods for model simulation. Int. J. Comput. Math. 88(14): 2969-2987 (2011) - [j14]Stefania Bellavia
Computational experience with numerical methods for nonnegative least-squares problems. Numer. Linear Algebra Appl. 18(3): 363-385 (2011) - [j13]Stefania Bellavia
Efficient Preconditioner Updates for Shifted Linear Systems. SIAM J. Sci. Comput. 33(4): 1785-1809 (2011) - [j12]Stefania Bellavia
Nonsymmetric Preconditioner Updates in Newton-Krylov Methods for Nonlinear Systems. SIAM J. Sci. Comput. 33(5): 2595-2619 (2011) - 2010
- [j11]Stefania Bellavia
Convergence of a Regularized Euclidean Residual Algorithm for Nonlinear Least-Squares. SIAM J. Numer. Anal. 48(1): 1-29 (2010)
2000 – 2009
- 2009
- [j10]Stefania Bellavia
Numerical solution of KKT systems in PDE-constrained optimization problems via the affine scaling trust-region approach. Int. J. Comput. Math. 86(12): 2122-2142 (2009) - [j9]Stefania Bellavia
Regularization and preconditioning of KKT systems arising in nonnegative least-squares problems. Numer. Linear Algebra Appl. 16(1): 39-61 (2009) - 2007
- [j8]Stefania Bellavia
Globalization strategies for Newton-Krylov methods for stabilized FEM discretization of Navier-Stokes equations. J. Comput. Phys. 226(2): 2317-2340 (2007) - 2006
- [j7]Stefania Bellavia
An interior point Newton-like method for non-negative least-squares problems with degenerate solution. Numer. Linear Algebra Appl. 13(10): 825-846 (2006) - [j6]Stefania Bellavia
Subspace Trust-Region Methods for Large Bound-Constrained Nonlinear Equations. SIAM J. Numer. Anal. 44(4): 1535-1555 (2006) - [c2]Stefania Bellavia
Inferences on Kernel Density Estimates by Solving Nonlinear Systems. SSDBM 2006: 389-397 - 2005
- [j5]Stefania Bellavia
An interior global method for nonlinear systems with simple bounds. Optim. Methods Softw. 20(4-5): 453-474 (2005) - 2004
- [j4]Stefania Bellavia
STRSCNE: A Scaled Trust-Region Solver for Constrained Nonlinear Equations. Comput. Optim. Appl. 28(1): 31-50 (2004) - [j3]Stefania Bellavia
Convergence Analysis of an Inexact Infeasible Interior Point Method for Semidefinite Programming. Comput. Optim. Appl. 29(3): 289-313 (2004) - 2001
- [j2]Stefania Bellavia
A Globally Convergent Newton-GMRES Subspace Method for Systems of Nonlinear Equations. SIAM J. Sci. Comput. 23(3): 940-960 (2001) - 2000
- [c1]Stefania Bellavia, Maria Macconi, Benedetta Morini:
A Hybrid Newton-GMRES Method for Solving Nonlinear Equations. NAA 2000: 68-75
1990 – 1999
- 1998
- [j1]Stefania Bellavia, Maria Macconi, Benedetta Morini:
The Switching-Method in Multiple Shooting. Computing 60(3): 275-283 (1998)
Coauthor Index
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