Search Results for author: Mehran Mesbahi

Found 16 papers, 4 papers with code

Data-Guided Regulator for Adaptive Nonlinear Control

no code implementations20 Nov 2023 Niyousha Rahimi, Mehran Mesbahi

This paper addresses the problem of designing a data-driven feedback controller for complex nonlinear dynamical systems in the presence of time-varying disturbances with unknown dynamics.

Time Series

An Active-Sensing Approach for Bearing-based Target Localization

no code implementations16 Nov 2023 Beniamino Pozzan, Giulia Michieletto, Mehran Mesbahi, Angelo Cenedese

Characterized by a cross-disciplinary nature, the bearing-based target localization task involves estimating the position of an entity of interest by a group of agents capable of collecting noisy bearing measurements.

Position valid

Duality-Based Stochastic Policy Optimization for Estimation with Unknown Noise Covariances

no code implementations26 Oct 2022 Shahriar Talebi, Amirhossein Taghvaei, Mehran Mesbahi

Specifically, building on the duality between synthesizing optimal control and estimation gains, the filter design problem is formalized as direct policy learning.

Vector-valued Privacy-Preserving Average Consensus

no code implementations22 Sep 2022 Lulu Pan, Haibin Shao, Yang Lu, Mehran Mesbahi, Dewei Li, Yugeng Xi

We show that the vector-valued PPAC problem can be solved via associated matrix-weighted networks with the higher-dimensional agent state.

Privacy Preserving

Structural Adaptivity of Directed Networks

no code implementations28 Aug 2022 Lulu Pan, Haibin Shao, Mehran Mesbahi, Dewei Li, Yugeng Xi

Inspired by the observation that the link redundancy in a network may degrade its diffusion performance, a distributed data-driven neighbor selection framework is proposed to adaptively adjust the network structure for improving the diffusion performance of exogenous influence over the network.

Distributed Neighbor Selection in Multi-agent Networks

no code implementations26 Jul 2021 Haibin Shao, Lulu Pan, Mehran Mesbahi, Yugeng Xi, Dewei Li

For distributed implementation, a quantitative connection between entries of Laplacian eigenvectors and the "relative rate of change" in the state between neighboring agents is further established; this connection facilitates a distributed algorithm for each agent to identify "favorable" neighbors to interact with.

Cluster Consensus on Matrix-weighted Switching Networks

no code implementations20 Jul 2021 Lulu Pan, Haibin Shao, Mehran Mesbahi, Dewei Li, Yugeng Xi

Second, if the underlying network switches amongst infinite number of networks, the matrix-weighted integral network is employed to provide sufficient conditions for cluster consensus and the quantitative characterization of the corresponding steady-state of the multi-agent system, using null space analysis of matrix-valued Laplacian related of integral network associated with the switching networks.

Data-Driven Structured Policy Iteration for Homogeneous Distributed Systems

1 code implementation22 Mar 2021 Siavash Alemzadeh, Shahriar Talebi, Mehran Mesbahi

Control of networked systems, comprised of interacting agents, is often achieved through modeling the underlying interactions.

On Controllability and Persistency of Excitation in Data-Driven Control: Extensions of Willems' Fundamental Lemma

no code implementations5 Feb 2021 Yue Yu, Shahriar Talebi, Henk J. van Waarde, Ufuk Topcu, Mehran Mesbahi, Behçet Açıkmeşe

Willems' fundamental lemma asserts that all trajectories of a linear time-invariant system can be obtained from a finite number of measured ones, assuming that controllability and a persistency of excitation condition hold.

LEMMA Model Predictive Control

Deep Learning-based Resource Allocation for Infrastructure Resilience

1 code implementation12 Jul 2020 Siavash Alemzadeh, Hesam Talebiyan, Shahriar Talebi, Leonardo Duenas-Osorio, Mehran Mesbahi

From an optimization point of view, resource allocation is one of the cornerstones of research for addressing limiting factors commonly arising in applications such as power outages and traffic jams.

On Regularizability and its Application to Online Control of Unstable LTI Systems

1 code implementation29 May 2020 Shahriar Talebi, Siavash Alemzadeh, Niyousha Rahimi, Mehran Mesbahi

Learning, say through direct policy updates, often requires assumptions such as knowing a priori that the initial policy (gain) is stabilizing, or persistently exciting (PE) input-output data, is available.

Time Series Analysis

Global Convergence of Policy Gradient Methods for the Linear Quadratic Regulator

no code implementations ICML 2018 Maryam Fazel, Rong Ge, Sham M. Kakade, Mehran Mesbahi

Direct policy gradient methods for reinforcement learning and continuous control problems are a popular approach for a variety of reasons: 1) they are easy to implement without explicit knowledge of the underlying model 2) they are an "end-to-end" approach, directly optimizing the performance metric of interest 3) they inherently allow for richly parameterized policies.

Continuous Control Policy Gradient Methods

Global Convergence of Policy Gradient Methods for Linearized Control Problems

no code implementations ICLR 2018 Maryam Fazel, Rong Ge, Sham M. Kakade, Mehran Mesbahi

Direct policy gradient methods for reinforcement learning and continuous control problems are a popular approach for a variety of reasons: 1) they are easy to implement without explicit knowledge of the underlying model; 2) they are an "end-to-end" approach, directly optimizing the performance metric of interest; 3) they inherently allow for richly parameterized policies.

Continuous Control Policy Gradient Methods

Online Distributed Optimization on Dynamic Networks

no code implementations22 Dec 2014 Saghar Hosseini, Airlie Chapman, Mehran Mesbahi

This paper presents a distributed optimization scheme over a network of agents in the presence of cost uncertainties and over switching communication topologies.

Distributed Optimization

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