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2102.03862

A generalized model of flocking with steering

Guy A. Djokam, Muruhan Rathinam

correctmedium confidence
Category
Not specified
Journal tier
Specialist/Solid
Processed
Sep 28, 2025, 12:55 AM

Audit review

The paper’s closed-loop flocking theorem (Theorem 2) derives the key differential inequality with an N^2 gain, d/dt dV ≤ −α N^2 ψ(dX) dV + dβ, and uses the Lyapunov functional E(dX,dV)=dV+α N^2∫_0^{dX}ψ to bound positions and drive dV→0 under dβ∈L^1 and dβ(t)→0; unconditional flocking follows if ∫_0^∞ψ=∞ . The candidate solution replaces N^2 by N in both the dissipation and Lyapunov weight, but still invokes the paper’s stronger threshold (with N^2), yielding a mismatch that breaks the Step 2 argument (one cannot deduce α N S(R) > dV(0)+∫ dβ from a bound involving α N^2 S_∞). The paper’s ψ construction, use of active sets, and convergence argument are sound , whereas the model’s proof hinges on the incorrect coefficient and a missing explicit justification of α>0 (the paper provides it via Lemma 4 under dβ∈L^1) .

Referee report (LaTeX)

\textbf{Recommendation:} minor revisions

\textbf{Journal Tier:} specialist/solid

\textbf{Justification:}

The paper rigorously establishes flocking under steering in a generalized, closed-loop framework using active-set methods and a Lyapunov functional with the correct N\^2 gain. Assumptions and conclusions are coherent and well-motivated, and the singular-perturbation discussion complements the main result. Minor clarifications would further improve accessibility.