Search Results for author: Saviz Mowlavi

Found 9 papers, 3 papers with code

Policy Optimization for PDE Control with a Warm Start

no code implementations1 Mar 2024 Xiangyuan Zhang, Saviz Mowlavi, Mouhacine Benosman, Tamer Başar

The PO step fine-tunes the model-based controller to compensate for the modeling error from dimensionality reduction.

Dimensionality Reduction

Smooth and Sparse Latent Dynamics in Operator Learning with Jerk Regularization

no code implementations23 Feb 2024 Xiaoyu Xie, Saviz Mowlavi, Mouhacine Benosman

Spatiotemporal modeling is critical for understanding complex systems across various scientific and engineering disciplines, but governing equations are often not fully known or computationally intractable due to inherent system complexity.

Operator learning

Dual parametric and state estimation for partial differential equations

no code implementations19 Dec 2023 Saviz Mowlavi, Mouhacine Benosman

Designing estimation algorithms for systems governed by partial differential equations (PDEs) such as fluid flows is challenging due to the high-dimensional and oftentimes nonlinear nature of the dynamics, as well as their dependence on unobserved physical parameters.

Controlgym: Large-Scale Control Environments for Benchmarking Reinforcement Learning Algorithms

1 code implementation30 Nov 2023 Xiangyuan Zhang, Weichao Mao, Saviz Mowlavi, Mouhacine Benosman, Tamer Başar

This project serves the learning for dynamics & control (L4DC) community, aiming to explore key questions: the convergence of RL algorithms in learning control policies; the stability and robustness issues of learning-based controllers; and the scalability of RL algorithms to high- and potentially infinite-dimensional systems.

Benchmarking OpenAI Gym +2

Global Convergence of Receding-Horizon Policy Search in Learning Estimator Designs

1 code implementation9 Sep 2023 Xiangyuan Zhang, Saviz Mowlavi, Mouhacine Benosman, Tamer Başar

We introduce the receding-horizon policy gradient (RHPG) algorithm, the first PG algorithm with provable global convergence in learning the optimal linear estimator designs, i. e., the Kalman filter (KF).

Topology optimization with physics-informed neural networks: application to noninvasive detection of hidden geometries

no code implementations13 Mar 2023 Saviz Mowlavi, Ken Kamrin

We validate our framework by detecting the number, locations, and shapes of hidden voids and inclusions in linear and nonlinear elastic bodies using measurements of outer surface displacement from a single mechanical loading experiment.

Reinforcement learning-based estimation for partial differential equations

no code implementations20 Jan 2023 Saviz Mowlavi, Mouhacine Benosman

In systems governed by nonlinear partial differential equations such as fluid flows, the design of state estimators such as Kalman filters relies on a reduced-order model (ROM) that projects the original high-dimensional dynamics onto a computationally tractable low-dimensional space.

reinforcement-learning Reinforcement Learning (RL)

Reinforcement Learning State Estimation for High-Dimensional Nonlinear Systems

no code implementations29 Sep 2021 Saviz Mowlavi, Mouhacine Benosman, Saleh Nabi

In high-dimensional nonlinear systems such as fluid flows, the design of state estimators such as Kalman filters relies on a reduced-order model (ROM) of the dynamics.

reinforcement-learning Reinforcement Learning (RL) +1

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