Authors

Yifei Yang

Publications 2

Preprint Open access

PathTime-VLA: Path-Time Decoupling for Factorized Post-Training of Vision-Language-Action Policies

Qing Huang, Yifei Yang, Ziqing Zou et al. · 2026

Vision-Language-Action (VLA) policies typically predict actions at fixed time intervals, coupling the route a robot follows with its execution pace. This coupling complicates adaptation from teleoperation: useful geometric guidance comes with timing shaped by interface delays and operator behavior. Our key insight is t …

Preprint Open access

On the Efficiency-Safety Dilemma in Large Reasoning Models

Yifei Yang, Zouying Cao, Xingrui Wang et al. · 2026

Large reasoning models (LRMs) incur high inference costs, often mitigated by efficiency techniques like quantization and pruning. However, the impact of these techniques on model adversarial robustness remains largely unexplored. This study provides the first comprehensive analysis of the interplay between efficiency, …

Co-authors