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VagueBench: Benchmarking the Robustness of Embodied Agents on Ambient Context Illusions

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Briefings

A new benchmark called VagueBench was created to test how well embodied agents handle instructions without extra context. Researchers found that agents often fail when essential details are missing, even if the core task remains the same. This issue affects both simulated and real-world robots, potentially causing safety risks.

Key points

• VagueBench is a benchmark built on the AI2-THOR interactive simulation environment designed to evaluate context dependency in embodied agents.
• The benchmark contains 1,303 instruction pairs across diverse indoor environments, constructed using a human-agent co-generation framework.

Context

Embodied agents are increasingly deployed in open-world environments, but current robustness evaluations are biased toward hazardous instructions. VagueBench addresses this by testing agents under semantically sufficient but contextually minimal instructions, which are common in real-world human communication.

Limitations

The study evaluates only 6 state-of-the-art embodied agents on VagueBench. Results show significant degradation in task performance and executability, but the impact on real-world robotic systems remains unquantified.

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