← Search

Peixuan Han

9 accepted papers

2026

Energy-Based Transformers are Scalable Learners and Thinkers

ICLR 2026oral

Inference-time computation, analogous to human System 2 Thinking, has recently become popular for improving model performance. However, most existing approaches suffer from several limitations: they are modality-specific (e.g., working only in text), problem-specific (e.g., verifiable domains like m…

Cited by 0SourcecodeScholar
2026

GraphPlanner: Graph-Based Agentic Routing for LLMs

ICLR 2026poster

LLM routing has achieved promising results in integrating the strengths of di- verse models while balancing efficiency and performance. However, to support more realistic and challenging applications, routing must extend into agentic LLM settings—where task planning, multi-round cooperation among he…

Cited by 0SourcecodeScholar
2026

Self-Aligned Reward: Towards Effective and Efficient Reasoners

ICLR 2026poster

Reinforcement learning with verifiable rewards has significantly advanced reasoning with large language models (LLMs) in domains such as mathematics and logic. However, verifiable signals provide only coarse-grained or binary correctness feedback. This limitation results in inefficiencies like overl…

Cited by 0SourceScholar
2025

DecisionFlow: Advancing Large Language Model as Principled Decision Maker

EMNLP 2025

In high-stakes domains such as healthcare and finance, effective decision-making demands not just accurate outcomes but transparent and explainable reasoning. However, current language models often lack the structured deliberation needed for such tasks, instead generating decisions and justification

2025

EscapeBench: Towards Advancing Creative Intelligence of Language Model Agents

ACL 2025long

Language model agents excel in long-session planning and reasoning, but existing benchmarks primarily focus on goal-oriented tasks with explicit objectives, neglecting creative adaptation in unfamiliar environments. To address this, we introduce EscapeBench—a benchmark suite of room escape game envi…

2025

SafeScientist: Enhancing AI Scientist Safety for Risk-Aware Scientific Discovery

EMNLP 2025

Recent advancements in large language model (LLM) agents have significantly accelerated scientific discovery automation, yet concurrently raised critical ethical and safety concerns. To systematically address these challenges, we introduce **SafeScientist**, an innovative AI scientist framework expl

2025

SafeSwitch: Steering Unsafe LLM Behavior via Internal Activation Signals

EMNLP 2025

Large language models (LLMs) exhibit exceptional capabilities across various tasks but also pose risks by generating harmful content. Existing safety mechanisms, while improving model safety, often lead to overly cautious behavior and fail to fully leverage LLMs’ internal cognitive processes. Inspir