Results 81 to 90 of about 214 (158)

Semidiscrete Ritz-Galerkin Approximation of Nonlinear Parabolic Boundary Control Problems - Strong Convergence of Optimal Controls

open access: yes, 1994
: A class of optimal control problems for a parabolic equation with nonlinear boundary condition and constraints on the control and the state is considered.
Fredi Tröltzsch
core  

Constrained and unconstrained deep image prior optimization models with automatic regularization. [PDF]

open access: yesComput Optim Appl, 2023
Cascarano P   +4 more
europepmc   +1 more source

Superlinear Convergence And Implicit Filtering

open access: yes, 1999
. In this note we show how the implicit filtering algorithm can be coupled with the BFGS quasi-Newton update to obtain a superlinearly convergent iteration if the noise in the objective function decays sufficiently rapidly as the optimal point is ...
Choi Kelley, T. D. Choi, C. T. Kelley
core  

Truncated Newton Methods For Optimization With Inaccurate Functions And Gradients

open access: yes, 1999
. We consider unconstrained minimization problems that have functions and gradients given by "black box" codes with error control. We discuss several modifications of the Steihaug truncated Newton method that can improve performance for such ...
E.W. Sachs, C. T. Kelley, E. W. Sachs
core  

Explicit Solutions For Interval Semidefinite Linear Programs

open access: yes, 1993
We consider the special class of semidefinite linear programs (IV P ) maximize trace CX subject to L ¯ A(X) ¯ U; where C; X; L; U are symmetric matrices, A is a (onto) linear operator, and ¯ denotes the Loewner (positive semidefinite) partial order.
Henry Wolkowicz
core  

Comparison Of Different Fictitious Domain Approaches Used In Shape Optimization

open access: yes, 1996
. Shape optimization with a homogeneous Dirichlet boundary value problem as a state is considered. Three fictitious domain approaches on a fixed grid are presented and used as solvers for the state problem.
Jaroslav Haslinger
core  

A primal-dual splitting algorithm for composite monotone inclusions with minimal lifting. [PDF]

open access: yesNumer Algorithms, 2023
Aragón-Artacho FJ   +2 more
europepmc   +1 more source

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