Sparse estimation of polynomial and rational dynamical models

CR Rojas, R Tóth, H Hjalmarsson - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
In many practical situations, it is highly desirable to estimate an accurate mathematical
model of a real system using as few parameters as possible. At the same time, the need for …

Sparse estimation based on a validation criterion

CR Rojas, H Hjalmarsson - 2011 50th IEEE Conference on …, 2011 - ieeexplore.ieee.org
A sparse estimator with close ties with the LASSO (least absolute shrinkage and selection
operator) is analysed. The basic idea of the estimator is to relax the least-squares cost …

Sparse linear regression from perturbed data

SM Fosson, V Cerone, D Regruto - Automatica, 2020 - Elsevier
The problem of sparse linear regression is relevant in the context of linear system
identification from large datasets. When data are collected from real-world experiments …

Learning sparse dynamical systems from a single sample trajectory

S Fattahi, N Matni, S Sojoudi - 2019 IEEE 58th Conference on …, 2019 - ieeexplore.ieee.org
This paper addresses the problem of identifying sparse linear time-invariant (LTI) systems
from a single sample trajectory generated by the system dynamics. We introduce a Lasso …

SOCP based variance free Dantzig selector with application to robust estimation

AS Dalalyan - Comptes Rendus Mathematique, 2012 - Elsevier
Sparse estimation methods based on ℓ1 relaxation, such as Lasso and Dantzig Selector, are
powerful tools for estimating high dimensional linear models. However, in order to properly …

Sparse system identification for stochastic systems with general observation sequences

W Zhao, G Yin, EW Bai - Automatica, 2020 - Elsevier
Focusing on identification, this paper develops techniques to reconstruct zero and nonzero
elements of a sparse parameter vector θ of a stochastic dynamic system with general …

Order and structural dependence selection of LPV-ARX models revisited

R Tóth, H Hjalmarsson, CR Rojas - 2012 IEEE 51st IEEE …, 2012 - ieeexplore.ieee.org
Accurate parametric identification of Linear Parameter-Varying (LPV) systems requires an
optimal prior selection of model order and a set of functional dependencies for the …

On sparsity‐inducing methods in system identification and state estimation

L Bako - International Journal of Robust and Nonlinear Control, 2023 - Wiley Online Library
The purpose of this article is to survey some sparsity‐inducing methods in system
identification and state estimation. Such methods can be divided into two main categories …

Convex vs nonconvex approaches for sparse estimation: Lasso, Multiple Kernel Learning and Hyperparameter Lasso

A Aravkin, JV Burke, A Chiuso… - 2011 50th IEEE …, 2011 - ieeexplore.ieee.org
We consider the problem of sparse estimation in a Bayesian framework. We outline the
derivation of the Lasso in terms of marginalization of a particular Bayesian model. A different …

Data-driven sparse system identification

S Fattahi, S Sojoudi - 2018 56th Annual Allerton Conference …, 2018 - ieeexplore.ieee.org
In this paper, we study the system identification problem for sparse linear time-invariant
systems. We propose a sparsity promoting Lasso-type estimator to identify the dynamics of …