X-Fly is a staged training framework designed to improve full‑chunk aerial vision‑language navigation. It uses Recovery DAgger to label learner‑visited states with smooth action chunks and a STOP command, and Flow‑GRPO to jointly refine a chunked flow controller and a Bernoulli STOP policy. The approach achieves 74.18% success rate on test‑seen and 51.73% on test‑unseen, outperforming baseline methods.
By Ruibin Ju, Ruifeng Cai, Min Xu, Lin Wang
arXiv:2606. 28397v1 Announce Type: cross Abstract: Vision-language navigation (VLN) has recently advanced with large language and multimodal models, enabling agents to follow natural-language instructions in unseen environments without training a task-specific navigation policy.
By Shaoxuan Li, Xiangyu Dong, Xiaoguang Ma, Junfeng Chen, Haoran Zhao, Yaoming Zhou
Aerial vision-language navigation (VLN) agents built on large vision-language models are expensive to query. Executing a complete predicted action chunk before replanning amortizes this cost, reducing...
arXiv:2609.39915v1 Announce Type: new
Abstract: Vision-Language Navigation (VLN) requires embodied agents to generate actions based on instructions and observations. General-purpose multimodal agents...
By Haoxiang Shi, Zaijing Li, Muhe Ding, Xiang Deng, Yaowei Wang, Liqiang Nie
AgriVLN introduces a vision‑and‑language navigation benchmark (A2A) tailored for agricultural robots, comprising 1,560 episodes across six scene classes with step‑by‑step instructions and continuous actions. Existing VLN methods perform well on short instructions but poorly on long ones; to address this, the authors propose a Subtask‑Level‑Task (STL) module that decomposes complex instructions into simple subtasks. Integrating STL into the NavGPT backbone yields the AgriVLN method, improving success rate from 0.33 to 0.47 while slightly increasing navigation error from 2.76 m to 2.91 m, and the paper includes ablation and case studies on subtask quantity and scene classes.
By Xiaobei Zhao, Xingqi Lyu, Xin Chen, Xiang Li
arXiv:2606. 06836v1 Announce Type: cross Abstract: Language-guided UAV agents must execute long-horizon semantic instructions while producing smooth, physically feasible continuous flight commands, yet existing Vision-Language Navigation (VLN) benchmarks typically use discrete or coarse actions and existing UAV Vision-Language-Action (VLA) tasks focus on short, atomic maneuvers.
By Xiangyi Zheng, Xiangyu Wang, Qinan Liao, Zimu Tang, Yue Liao, Dongyue Lyu, Guodong Wang, Junjie Liu, Si Liu