arxivcs.ROcs.CV2026-07-04
From Region Arrival to Instance-Level Grounding in Vision-and-Language Navigation
Xiangyu Shi, Ruoxi Yang, Wei Tao, Jiwen Zhang, Yanyuan Qiao, Qi Wu
Vision-and-Language Navigation (VLN) agents may satisfy conventional success criteria while still failing to establish reliable object-level grounding, because current evaluation protocols mainly reward stopping within a 3-meter radius and largely ignore the agent's final orienta…