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Yeonjun Hwang

4 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
2025

Can You Share Your Story? Modeling Clients’ Metacognition and Openness for LLM Therapist Evaluation

ACL 2025finding

Understanding clients’ thoughts and beliefs is fundamental in counseling, yet current evaluations of LLM therapists often fail to assess this ability. Existing evaluation methods rely on client simulators that clearly disclose internal states to the therapist, making it difficult to determine whethe…

Cited by 0SourcePDFScholar
2025

PRINCIPLES: Synthetic Strategy Memory for Proactive Dialogue Agents

EMNLP 2025

Dialogue agents based on large language models (LLMs) have shown promising performance in proactive dialogue, which requires effective strategy planning. However, existing approaches to strategy planning for proactive dialogue face several limitations: limited strategy coverage, preference bias in p

Cited by 0SourcePDFScholar
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