5 papers
TeamTR: Trust-Region Fine-Tuning for Multi-Agent LLM Coordination
Yi Xie, Siao Liu, Falong Fan +3
Multi-agent LLM systems have shown promise for complex reasoning, yet recent evaluations reveal they often underperform single-model baselines. We identify a structural failure mod…
EndoVGGT: GNN-Enhanced Depth Estimation for Surgical 3D Reconstruction
Falong Fan, Yi Xie, Arnis Lektauers +2
Accurate 3D reconstruction of deformable soft tissues is essential for surgical robotic perception. However, low-texture surfaces, specular highlights, and instrument occlusions of…
A Comprehensive Survey on Surgical Digital Twin
Afsah Sharaf Khan, Falong Fan, Doohwan DH Kim +7
With the accelerating availability of multimodal surgical data and real-time computation, Surgical Digital Twins (SDTs) have emerged as virtual counterparts that mirror, predict, a…
Enhancing Hierarchical Reinforcement Learning through Change Point Detection in Time Series
Hemanath Arumugam, Falong Fan, Bo Liu
Hierarchical Reinforcement Learning (HRL) enhances the scalability of decision-making in long-horizon tasks by introducing temporal abstraction through options-policies that span m…
PeerGuard: Defending Multi-Agent Systems Against Backdoor Attacks Through Mutual Reasoning
Falong Fan, Xi Li
Multi-agent systems leverage advanced AI models as autonomous agents that interact, cooperate, or compete to complete complex tasks across applications such as robotics and traffic…