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William Han

6 accepted papers

2025

Behavior Injection: Preparing Language Models for Reinforcement Learning

NeurIPS 2025poster

Reinforcement learning (RL) has emerged as a powerful post-training technique to incentivize the reasoning ability of large language models (LLMs). However, LLMs can respond very inconsistently to RL finetuning: some show substantial performance gains, while others plateau or even degrade. To unders…

Cited by 0SourcecodeScholar
2025

Safety is Not Only About Refusal: Reasoning-Enhanced Fine-tuning for Interpretable LLM Safety

ACL 2025finding

Large Language Models (LLMs) are vulnerable to jailbreak attacks that exploit weaknesses in traditional safety alignment, which often relies on rigid refusal heuristics or representation engineering to block harmful outputs. While they are effective for direct adversarial attacks, they fall short of…

Cited by 0SourcePDFScholar
2025

Your Language Model May Think Too Rigidly: Achieving Reasoning Consistency with Symmetry-Enhanced Training

ACL 2025finding

Large Language Models (LLMs) have demonstrated strong reasoning capabilities across various tasks. However, even minor variations in query phrasing, despite preserving the underlying semantic meaning, can significantly affect their performance. To address this, we focus on enhancing LLMs’ awareness…

Cited by 0SourcePDFScholar
2024

Embodied Executable Policy Learning with Language-based Scene Summarization

NAACL 2024long

Large Language models (LLMs) have shown remarkable success in assisting robot learning tasks, i.e., complex household planning.However, the performance of pretrained LLMs heavily relies on domain-specific templated text data, which may be infeasible in real-world robot learning tasks with image-base…

Cited by 7SourcePDFScholar
2024

MMSum: A Dataset for Multimodal Summarization and Thumbnail Generation of Videos

CVPR 2024highlight

Multimodal summarization with multimodal output (MSMO) has emerged as a promising research direction. Nonetheless numerous limitations exist within existing public MSMO datasets including insufficient maintenance data inaccessibility limited size and the absence of proper categorization which pose s…

2023

Can Brain Signals Reveal Inner Alignment with Human Languages?

EMNLP 2023short findings

Brain Signals, such as Electroencephalography (EEG), and human languages have been widely explored independently for many downstream tasks, however, the connection between them has not been well explored. In this study, we explore the relationship and dependency between EEG and language. To study at…

Cited by 0SourcecodeScholar