collaborators

7 papers

cs.AI2026

Oyster-II: Reinforcement Learning for Constructive Safety Alignment in Large Language Models

Jiyang Guan, Yong Xie, Jun Chen +6

Large language models (LLMs) have demonstrated remarkable capabilities across diverse applications, yet ensuring their simultaneous safety, helpfulness, and trustworthiness remains…

cs.CL2026

Inverse Reinforcement Learning with Dynamic Reward Scaling for LLM Alignment

Ruoxi Cheng, Haoxuan Ma, Weixin Wang +7

Alignment is vital for safely deploying large language models (LLMs). Existing techniques are either reward-based (training a reward model on preference pairs and optimizing with r…

cs.LG2026

A Causal Perspective for Enhancing Jailbreak Attack and Defense

Licheng Pan, Yunsheng Lu, Jiexi Liu +5

Uncovering the mechanisms behind "jailbreaks" in large language models (LLMs) is crucial for enhancing their safety and reliability, yet these mechanisms remain poorly understood.…

cs.CV2025

MoAPT: Mixture of Adversarial Prompt Tuning for Vision-Language Models

Shiji Zhao, Qihui Zhu, Shukun Xiong +7

Large pre-trained Vision Language Models (VLMs) demonstrate excellent generalization capabilities but remain highly susceptible to adversarial examples, posing potential security r…

cs.AI2025

Oyster-I: Beyond Refusal -- Constructive Safety Alignment for Responsible Language Models

Ranjie Duan, Jiexi Liu, Xiaojun Jia +27

Large language models (LLMs) typically deploy safety mechanisms to prevent harmful content generation. Most current approaches focus narrowly on risks posed by malicious actors, of…

cs.CY2025

Strata-Sword: A Hierarchical Safety Evaluation towards LLMs based on Reasoning Complexity of Jailbreak Instructions

Shiji Zhao, Ranjie Duan, Jiexi Liu +10

Large language models (LLMs) have gained widespread recognition for their superior comprehension and have been deployed across numerous domains. Building on Chain-of-Thought (CoT)…