Search Results for author: Per Mattsson

Found 7 papers, 3 papers with code

On the equivalence of direct and indirect data-driven predictive control approaches

1 code implementation9 Mar 2024 Per Mattsson, Fabio Bonassi, Valentina Breschi, Thomas B. Schön

Recently, several direct Data-Driven Predictive Control (DDPC) methods have been proposed, advocating the possibility of designing predictive controllers from historical input-output trajectories without the need to identify a model.

Entropy-regularized Diffusion Policy with Q-Ensembles for Offline Reinforcement Learning

1 code implementation6 Feb 2024 Ruoqi Zhang, Ziwei Luo, Jens Sjölund, Thomas B. Schön, Per Mattsson

We show that such an SDE has a solution that we can use to calculate the log probability of the policy, yielding an entropy regularizer that improves the exploration of offline datasets.

D4RL Offline RL +2

Structured state-space models are deep Wiener models

no code implementations11 Dec 2023 Fabio Bonassi, Carl Andersson, Per Mattsson, Thomas B. Schön

The goal of this paper is to provide a system identification-friendly introduction to the Structured State-space Models (SSMs).

Aiding reinforcement learning for set point control

no code implementations20 Apr 2023 Ruoqi Zhang, Per Mattsson, Torbjörn Wigren

While reinforcement learning has made great improvements, state-of-the-art algorithms can still struggle with seemingly simple set-point feedback control problems.

reinforcement-learning

Robust nonlinear set-point control with reinforcement learning

no code implementations20 Apr 2023 Ruoqi Zhang, Per Mattsson, Torbjörn Wigren

This paper argues that three ideas can improve reinforcement learning methods even for highly nonlinear set-point control problems: 1) Make use of a prior feedback controller to aid amplitude exploration.

reinforcement-learning

Tuned Regularized Estimators for Linear Regression via Covariance Fitting

no code implementations21 Jan 2022 Per Mattsson, Dave Zachariah, Petre Stoica

We start by showing that three known optimal linear estimators belong to a wider class of estimators that can be formulated as a solution to a weighted and constrained minimization problem.

regression

Recursive nonlinear-system identification using latent variables

1 code implementation14 Jun 2016 Per Mattsson, Dave Zachariah, Petre Stoica

In this paper we develop a method for learning nonlinear systems with multiple outputs and inputs.

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