Fine-Grained Instruction-Guided Graph Reasoning for Vision-and-Language Navigation
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Abstract (arXiv)
Vision and Language Navigation (VLN) requires an embodied agent to traverse complex environments by following natural language instructions, demanding accurate alignment between visual observations and linguistic guidance. To address these challenges, we propose a fine grained instruction guided graph reasoning framework (FIGR) that enhances both spatial representation and instruction understanding during navigation. Specifically, an observation graph interaction mechanism is introduced to disentangle angular and visual cues while strengthening directed edge representations through geometric embedding, enabling more reliable spatial reasoning within the navigation graph. The key detail guidance module is implemented as Adaptive Open Vocabulary Guidance (AOVG), where a contextual role parser dynamically identifies location, object, spatial relation, and other contextual cues. This design avoids exact string matching and supports previously unseen entities and compositional expressions. For multilingual instructions, a Multilingual Semantic Adapter (MSA) maps language-specific representations into a shared navigation-semantic space. By jointly integrating structured graph reasoning with instruction critical semantic cues, the proposed approach significantly improves the agent ability to follow complex navigation instructions. On the validation-unseen splits, FIGR achieves 67 SPL on R2R and 64.8 sDTW on RxR, exceeding SPENav by 1 percentage point in SPL and PRET by 2.4 points in sDTW, respectively.
Key facts. Cited by 1 paper in the map (data through 7 Oct 2026). Builds on 43 of its 67 references that are in the map. First posted on arXiv 14 Mar 2025.
Builds on
43 of 67 references.
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31 more
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Citing papers per year: 2026: 1.
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- 2025VLN-MME: Diagnosing MLLMs as Language-guided Visual Navigation agents
- 2026GROKE: Vision-Free Navigation Instruction Evaluation via Graph Reasoning on OpenStreetMap
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