Modeling of distributed parameter systems for applications—A synthesized review from time–space separation

HX Li, C Qi - Journal of Process Control, 2010 - Elsevier
Many industrial processes belong to distributed parameter systems (DPS) that have strong
spatial–temporal dynamics. Modeling of DPS is difficult but essential to simulation, control …

Adaptive space-time finite element methods for parabolic optimization problems

D Meidner, B Vexler - SIAM Journal on Control and Optimization, 2007 - SIAM
In this paper we derive a posteriori error estimates for space-time finite element
discretizations of parabolic optimization problems. The provided error estimates assess the …

[HTML][HTML] Neural control of discrete weak formulations: Galerkin, least squares & minimal-residual methods with quasi-optimal weights

I Brevis, I Muga, KG van der Zee - Computer Methods in Applied Mechanics …, 2022 - Elsevier
There is tremendous potential in using neural networks to optimize numerical methods. In
this paper, we introduce and analyze a framework for the neural optimization of discrete …

Efficient numerical solution of parabolic optimization problems by finite element methods

R Becker, D Meidner, B Vexler - Optimisation Methods and …, 2007 - Taylor & Francis
We present an approach for efficient numerical solution of optimization problems governed
by parabolic partial differential equations. The main ingredients are: space-time finite …

A novel spatiotemporal LS-SVM method for complex distributed parameter systems with applications to curing thermal process

X Lu, W Zou, M Huang - IEEE Transactions on Industrial …, 2016 - ieeexplore.ieee.org
The least-squares support vector machine (LS-SVM) has been successfully used to model
nonlinear time dynamics; however, it does not have the capability to handle space …

Parallel algorithms for PDE-constrained optimization

V Akçelik, G Biros, O Ghattas, J Hill, D Keyes… - Parallel processing for …, 2006 - SIAM
PDE-constrained optimization refers to the optimization of systems governed by PDEs. The
simulation problem is to solve the PDEs for the state variables (eg, displacement, velocity …

Mesh refinement and numerical sensitivity analysis for parameter calibration of partial differential equations

R Becker, B Vexler - Journal of Computational Physics, 2005 - Elsevier
We consider the calibration of parameters in physical models described by partial differential
equations. This task is formulated as a constrained optimization problem with a cost …

A priori mesh grading for an elliptic problem with Dirac right-hand side

T Apel, O Benedix, D Sirch, B Vexler - SIAM Journal on Numerical Analysis, 2011 - SIAM
The Green function of the Poisson equation in two dimensions is not contained in the
Sobolev space H^1(Ω) such that finite element error estimates for the discretization of a …

Finite element approximation of elliptic Dirichlet optimal control problems

B Vexler - Numerical Functional Analysis and Optimization, 2007 - Taylor & Francis
We develop a priori error analysis for the finite element Galerkin discretization of elliptic
Dirichlet optimal control problems. The state equation is given by an elliptic partial …

Numerical analysis of sparse initial data identification for parabolic problems

D Leykekhman, B Vexler, D Walter - … : Mathematical Modelling and …, 2020 - esaim-m2an.org
In this paper we consider a problem of initial data identification from the final time
observation for homogeneous parabolic problems. It is well-known that such problems are …