Author

Daxin Tian

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Preprint Aug 2026

RefineFly: Failure-Aware Post-Training for Aerial Vision-Language Navigation

Unmanned aerial vehicle vision-language navigation (UAV-VLN) requires agents to translate visual observations and language instructions into reliable flight actions in complex environments. Although recent end-to-end UAV vision-language-action (UAV-VLA) policies reduce reliance on separately designed perception, planni...

Boxiong Wang, Hui Kang, Geng Sun et al. · 0 citations

#artificial intelligence Preprint Aug 2026

RecoverFly: A Failure-Aware Reinforcement Learning Post-Training Framework for Aerial Vision-Language Navigation

RecoverFly is proposed, a failure-aware RL post-training framework for end-to-end UAV-VLA policies that adapts token-level RL for stable optimization of grammar-constrained autoregressive UAV actions, revisits unresolved failure cases to strengthen corrective learning and sample utilization, and combines a two-stage lo...

Boxiong Wang, Hui Kang, Geng Sun et al. · 0 citations