Vehicular traffic, crowds, and swarms: From kinetic theory and multiscale methods to applications and research perspectives

G Albi, N Bellomo, L Fermo, SY Ha, J Kim… - … Models and Methods …, 2019 - World Scientific
This paper presents a review and critical analysis on the modeling of the dynamics of
vehicular traffic, human crowds and swarms seen as living and, hence, complex systems. It …

Sharp conditions to avoid collisions in singular Cucker–Smale interactions

JA Carrillo, YP Choi, PB Mucha, J Peszek - Nonlinear Analysis: Real World …, 2017 - Elsevier
Abstract We consider the Cucker–Smale flocking model with a singular communication
weight ψ (s)= s− α with α> 0. We provide a critical value of the exponent α in the …

A collisionless singular Cucker--Smale model with decentralized formation control

YP Choi, D Kalise, J Peszek, AA Peters - SIAM Journal on Applied Dynamical …, 2019 - SIAM
We address the design of decentralized feedback control laws inducing consensus and
prescribed spatial patterns over a singular interacting particle system of Cucker--Smale type …

Mean field control hierarchy

G Albi, YP Choi, M Fornasier, D Kalise - Applied Mathematics & …, 2017 - Springer
In this paper we model the role of a government of a large population as a mean field
optimal control problem. Such control problems are constrained by a PDE of continuity-type …

Mean-field limits: from particle descriptions to macroscopic equations

JA Carrillo, YP Choi - Archive for Rational Mechanics and Analysis, 2021 - Springer
We rigorously derive pressureless Euler-type equations with nonlocal dissipative terms in
velocity and aggregation equations with nonlocal velocity fields from Newton-type particle …

Cucker-Smale model with normalized communication weights and time delay

YP Choi, J Haskovec - arXiv preprint arXiv:1608.06747, 2016 - arxiv.org
We study a Cucker-Smale-type system with time delay in which agents interact with each
other through normalized communication weights. We construct a Lyapunov functional for …

Global regularity for the fractional Euler alignment system

T Do, A Kiselev, L Ryzhik, C Tan - Archive for Rational Mechanics and …, 2018 - Springer
We study a pressureless Euler system with a non-linear density-dependent alignment term,
originating in the Cucker–Smale swarming models. The alignment term is dissipative in the …

Mean-field optimal control as gamma-limit of finite agent controls

M Fornasier, S Lisini, C Orrieri… - European Journal of …, 2019 - cambridge.org
This paper focuses on the role of a government of a large population of interacting agents as
a meanfield optimal control problem derived from deterministic finite agent dynamics. The …

[HTML][HTML] Emergent behavior of Cucker–Smale flocking particles with heterogeneous time delays

YP Choi, Z Li - Applied Mathematics Letters, 2018 - Elsevier
We analyze the flocking behavior of a Cucker–Smale-type system with a delayed coupling,
where delays are information processing and reactions of individuals. By constructing a …

Convergence of a first-order consensus-based global optimization algorithm

SY Ha, S Jin, D Kim - Mathematical Models and Methods in Applied …, 2020 - World Scientific
Global optimization of a non-convex objective function often appears in large-scale machine
learning and artificial intelligence applications. Recently, consensus-based optimization …