Navigating the Nuances: A Fine-grained Evaluation of Vision-Language Navigation

Zehao Wang, Minye Wu, Yixin Cao, Yubo Ma, Meiqi Chen, Tinne Tuytelaars


Abstract
This study presents a novel evaluation framework for the Vision-Language Navigation (VLN) task. It aims to diagnose current models for various instruction categories at a finer-grained level. The framework is structured around the context-free grammar (CFG) of the task. The CFG serves as the basis for the problem decomposition and the core premise of the instruction categories design. We propose a semi-automatic method for CFG construction with the help of Large-Language Models (LLMs). Then, we induct and generate data spanning five principal instruction categories (i.e. direction change, landmark recognition, region recognition, vertical movement, and numerical comprehension). Our analysis of different models reveals notable performance discrepancies and recurrent issues. The stagnation of numerical comprehension, heavy selective biases over directional concepts, and other interesting findings contribute to the development of future language-guided navigation systems. The project is now available at https://zehao-wang.github.io/navnuances.
Anthology ID:
2024.findings-emnlp.269
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2024
Month:
November
Year:
2024
Address:
Miami, Florida, USA
Editors:
Yaser Al-Onaizan, Mohit Bansal, Yun-Nung Chen
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4681–4704
Language:
URL:
https://aclanthology.org/2024.findings-emnlp.269
DOI:
Bibkey:
Cite (ACL):
Zehao Wang, Minye Wu, Yixin Cao, Yubo Ma, Meiqi Chen, and Tinne Tuytelaars. 2024. Navigating the Nuances: A Fine-grained Evaluation of Vision-Language Navigation. In Findings of the Association for Computational Linguistics: EMNLP 2024, pages 4681–4704, Miami, Florida, USA. Association for Computational Linguistics.
Cite (Informal):
Navigating the Nuances: A Fine-grained Evaluation of Vision-Language Navigation (Wang et al., Findings 2024)
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PDF:
https://aclanthology.org/2024.findings-emnlp.269.pdf