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Haejoon Lee

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#machine learning Preprint Sep 2026

Fully Byzantine-Resilient Multi-Agent Reinforcement Learning

We study distributed Byzantine-resilient actor-critic multi-agent reinforcement learning (AC-MARL), where agents collectively learn policies through local interactions. Existing methods guarantee convergence of the agents'parameters only to a neighborhood of the attack-free limit points, resulting in degraded performan...

Haejoon Lee, Dimitra Panagou · 0 citations
Jul 2026

Distributed Model-Based Diffusion For Scalable Multi-Robot Trajectory Optimization

Distributed Model-Based Diffusion is proposed, a distributed server-robot framework that decomposes the reverse diffusion process into local conditional reverse diffusion processes that enables each robot to iteratively perform denoising independently within its own control subspace while conditioning on the current tr...

Haejoon Lee, Xin-Yi Wang, Taekyung Kim et al. · 0 citations

Robust Multi-Agent LLMs under Byzantine Faults

Self-Anchored Consensus (SAC), a fully decentralized filter-and-refine protocol in which agents iteratively exchange responses, locally evaluate and filter unreliable messages, and refine their own outputs, is proposed.

Haejoon Lee, Vincent Yun, Hyeonho Oh et al. · 3 citations

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