Search Results for author: Dominique Orban

Found 5 papers, 2 papers with code

A Stochastic Proximal Method for Nonsmooth Regularized Finite Sum Optimization

1 code implementation14 Jun 2022 Dounia Lakhmiri, Dominique Orban, Andrea Lodi

We consider the problem of training a deep neural network with nonsmooth regularization to retrieve a sparse and efficient sub-structure.

Adaptive First- and Second-Order Algorithms for Large-Scale Machine Learning

no code implementations29 Nov 2021 Sanae Lotfi, Tiphaine Bonniot de Ruisselet, Dominique Orban, Andrea Lodi

In this paper, we consider both first- and second-order techniques to address continuous optimization problems arising in machine learning.

BIG-bench Machine Learning Stochastic Optimization

A Julia implementation of Algorithm NCL for constrained optimization

no code implementations6 Jan 2021 Ding Ma, Dominique Orban, Michael A. Saunders

We give numerical results from a Julia implementation of Algorithm NCL on tax policy models that do not satisfy the LICQ, and on nonlinear least-squares problems and general problems from the CUTEst test set.

Optimization and Control Numerical Analysis Numerical Analysis

Stochastic Damped L-BFGS with Controlled Norm of the Hessian Approximation

no code implementations10 Dec 2020 Sanae Lotfi, Tiphaine Bonniot de Ruisselet, Dominique Orban, Andrea Lodi

We propose a new stochastic variance-reduced damped L-BFGS algorithm, where we leverage estimates of bounds on the largest and smallest eigenvalues of the Hessian approximation to balance its quality and conditioning.

regression

Constraint-Preconditioned Krylov Solvers for Regularized Saddle-Point Systems

1 code implementation7 Oct 2019 Daniela di Serafino, Dominique Orban

We consider the iterative solution of regularized saddle-point systems.

Numerical Analysis Numerical Analysis 65F08, 65F10, 65F50, 90C20

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