438 citations · 1k across the 57 of their papers we have counts for
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Global convergence of the Heavy-ball method for convex optimization
Euhanna Ghadimi, Hamid Reza Feyzmahdavian, Mikael Johansson
This paper establishes global convergence and provides global bounds of the convergence rate of the Heavy-ball method for convex optimization problems. When the objective function…
Emergent Behaviors over Signed Random Dynamical Networks: Relative-State-Flipping Model
Guodong Shi, Alexandre Proutiere, Mikael Johansson +2
We study asymptotic dynamical patterns that emerge among a set of nodes interacting in a dynamically evolving signed random network, where positive links carry out standard consens…
Emergent Behaviors over Signed Random Dynamical Networks: State-Flipping Model
Guodong Shi, Alexandre Proutiere, Mikael Johansson +2
Recent studies from social, biological, and engineering network systems have drawn attention to the dynamics over signed networks, where each link is associated with a positive/neg…
Approximation of Markov Processes by Lower Dimensional Processes via Total Variation Metrics
Ioannis Tzortzis, Charalambos D. Charalambous, Themistoklis Charalambous +2
The aim of this paper is to approximate a finite-state Markov process by another process with fewer states, called herein the approximating process. The approximation problem is fo…
Sub-homogeneous positive monotone systems are insensitive to heterogeneous time-varying delays
Hamid Reza Feyzmahdavian, Themistoklis Charalambous, Mikael Johansson
We show that a sub-homogeneous positive monotone system with bounded heterogeneous time-varying delays is globally asymptotically stable if and only if the corresponding delay-free…
Asymptotic Stability and Decay Rates of Homogeneous Positive Systems With Bounded and Unbounded Delays
Hamid Reza Feyzmahdavian, Themistoklis Charalambous, Mikael Johansson
There are several results on the stability of nonlinear positive systems in the presence of time delays. However, most of them assume that the delays are constant. This paper consi…