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Dongwook Choi

3 accepted papers

2026

EMBGUARD: Constructing Hazard-Aware Guardrails for Safe Planning in Embodied Agents

ICML 2026poster

MLLM-powered embodied agents deployed in real-world environments encounter physical hazards. However, existing approaches lack explicit mechanisms for identifying hazards and reasoning about action-conditioned risks, leading agents to either miss risky interactions or over-identify risks. To address…

Cited by 0SourceScholar
2026

Embodied Agents Meet Personalization: Investigating Challenges and Solutions Through the Lens of Memory Utilization

ICLR 2026poster

LLM-powered embodied agents have shown success on conventional object-rearrangement tasks, but providing personalized assistance that leverages user-specific knowledge from past interactions presents new challenges. We investigate these challenges through the lens of agents' memory utilization along…

Cited by 0SourcecodeScholar
2025

Web-Shepherd: Advancing PRMs for Reinforcing Web Agents

NeurIPS 2025spotlight

Web navigation is a unique domain that can automate many repetitive real-life tasks and is challenging as it requires long-horizon sequential decision making beyond typical multimodal large language model (MLLM) tasks. Yet, specialized reward models for web navigation that can be utilized during bot…

Cited by 0SourcecodeScholar