65 citations · 198 across the 15 of their papers we have counts for
17 papers
On stability of a distributed observer over switching networks: The case of commutative coupling
Sunghyun Koo, Jin Gyu Lee, Hyungbo Shim
Distributed state estimation algorithms have been extended to switching networks, which model unreliable communication networks. Yet existing results apply only to specific classes…
Emergent Behavior Is Robust to Communication Delays at the Cost of Slower System Evolution
Seokho Jeong, Jin Gyu Lee, Hyungbo Shim
Previous works have shown that strong coupling among heterogeneous agents enforces practical synchronization, leading to collective behavior governed by emergent dynamics. However,…
A note on input signal generators: A relaxation of Willems' fundamental lemma in the SISO case
Yun Jeong Yang, Jin Gyu Lee
We provide a practical relaxation of Willems' fundamental lemma for discrete-time linear time-invariant (single-input-single-output) systems. Instead of maintaining conventional Wi…
A Note on Emergent Behavior in Multi-agent Systems Enabled by Neuro-spike Communication
Hyeonyeong Jang, Donghyeon Song, Jin Gyu Lee +1
In this note, we present a novel synchronization framework for heterogeneous multi-agent systems enabled by neuro-spike communication, which induces emergence. Unlike conventional…
Adaptation of Parameters in Heterogeneous Multi-agent Systems
Hyungbo Shim, Jin Gyu Lee, B. D. O. Anderson
This paper proposes an adaptation mechanism for heterogeneous multi-agent systems to align the agents' internal parameters, based on enforced consensus through strong couplings. Un…
Complexity reduction for resilient state estimation of uniformly observable nonlinear systems
Junsoo Kim, Jin Gyu Lee, Henrik Sandberg +1
A resilient state estimation scheme for uniformly observable nonlinear systems, based on a method for local identification of sensor attacks, is presented. The estimation problem i…
A Design Method of Distributed Algorithms via Discrete-time Blended Dynamics Theorem
Jeong Woo Kim, Jin Gyu Lee, Donggil Lee +1
We develop a discrete-time version of the blended dynamics theorem for the use of designing distributed computation algorithms. The blended dynamics theorem enables to predict the…
Rapid and robust synchronization via weak synaptic coupling Extended arXiv version
Jin Gyu Lee, Rodolphe Sepulchre
This paper examines how weak synaptic coupling can achieve rapid synchronization in heterogeneous networks. The assumptions aim at capturing the key mathematical properties that ma…
Node-wise monotone barrier coupling law for formation control
Jin Gyu Lee, Cyrus Mostajeran, Graham Van Goffrier
We study a node-wise monotone barrier coupling law, motivated by the synaptic coupling of neural central pattern generators. It is illustrated that this coupling imitates the desir…
Edge-wise funnel output synchronization of heterogeneous agents with relative degree one
Jin Gyu Lee, Thomas Berger, Stephan Trenn +1
When a group of heterogeneous node dynamics are diffusively coupled with a high coupling gain, the group exhibits a collective emergent behavior which is governed by a simple algeb…
Networks obtained by Implicit-Explicit Method: Discrete-time distributed median solver
Jin Gyu Lee
In the purpose of making the consensus algorithm robust to outliers, consensus on the median value has recently attracted some attention. It has its applicability in for instance c…
Target formation on the circle by monotone system design
Cyrus Mostajeran, Jin Gyu Lee, Graham Van Goffrier +1
Positivity and Perron-Frobenius theory provide an elegant framework for the convergence analysis of linear consensus algorithms. Here we consider a generalization of these ideas to…
Design of heterogeneous multi-agent system for distributed computation
Jin Gyu Lee, Hyungbo Shim
A group behavior of a heterogeneous multi-agent system is studied which obeys an "average of individual vector fields" under strong couplings among the agents. Under stability of t…
Synchronization with prescribed transient behavior: Heterogeneous multi-agent systems under funnel coupling Extended arXiv version
Jin Gyu Lee, Stephan Trenn, Hyungbo Shim
In this paper, we introduce a nonlinear time-varying coupling law, which can be designed in a fully decentralized manner and achieves approximate synchronization with arbitrary pre…
Fully Distributed Resilient State Estimation based on Distributed Median Solver
Jin Gyu Lee, Junsoo Kim, Hyungbo Shim
In this paper, we present a scheme of fully distributed resilient state estimation for linear dynamical systems under sensor attacks. The proposed state observer consists of a netw…
A Tool for Analysis and Synthesis of Heterogeneous Multi-agent Systems under Rank-deficient Coupling
Jin Gyu Lee, Hyungbo Shim
The behavior of heterogeneous multi-agent systems is studied when the coupling matrices are possibly all different and/or singular, that is, its rank is less than the system dimens…
The Riemann Hypothesis and the possible proof
Jin Gyu Lee
The Riemann Hypothesis is not proved yet and this article gives a possible proof for the hypothesis which confirms that the only possible nontrivial zeros of the Riemann zeta-funct…