KodCode: A Diverse, Challenging, and Verifiable Synthetic Dataset for Coding

Zhangchen Xu, Yang Liu, Yueqin Yin, Mingyuan Zhou, Radha Poovendran

Arxiv / Website / Huggingface / Code /

SafeChain: Safety of Language Models with Long Chain-of-Thought Reasoning Capabilities

Fengqing Jiang, Zhangchen Xu, Yuetai Li, Luyao Niu, Zhen Xiang, Bo Li, Bill Yuchen Lin, Radha Poovendran

Arxiv

Small Models Struggle to Learn from Strong Reasoners

Yuetai Li, Xiang Yue, Zhangchen Xu, Fengqing Jiang, Luyao Niu, Bill Yuchen Lin, Bhaskar Ramasubramanian, Radha Poovendran

Arxiv

Distributed Consensus Network: A Modularized Communication Framework and Reliability Probabilistic Analysis

Yuetai Li, Zhangchen Xu, Yiqi Wang, Zihan Zhou, Jon Crowcroft, Lei Zhang

Arxiv

Stronger Models are NOT Stronger Teachers for Instruction Tuning

Zhangchen Xu, Fengqing Jiang, Luyao Niu, Bill Yuchen Lin, Radha Poovendran

NAACL 2025 (Main) | Paper / ✨ HF #1 Paper of the day (Nov 13)

Magpie: Alignment Data Synthesis from Scratch by Prompting Aligned LLMs with Nothing

Zhangchen Xu, Fengqing Jiang, Luyao Niu, Yuntian Deng, Radha Poovendran, Yejin Choi, Bill Yuchen Lin

ICLR 2025 | Paper / Website / Huggingface / Code / Demo / 新智元 / ✨ HF #1 Paper of the day (June 13)

ChatBug: A Common Vulnerability of Aligned LLMs Induced by Chat Templates

Fengqing Jiang*, Zhangchen Xu*, Luyao Niu*, Bill Yuchen Lin, Radha Poovendran

AAAI 2025 | Paper / Code

CleanGen: Mitigating Backdoor Attacks for Generation Tasks in Large Language Models

Yuetai Li*, Zhangchen Xu*, Fengqing Jiang, Luyao Niu, Dinuka Sahabandu, Bhaskar Ramasubramanian, Radha Poovendran

EMNLP 2024 (Main) | Paper / Code

ACE: A Model Poisoning Attack on Contribution Evaluation Methods in Federated Learning

Zhangchen Xu, Fengqing Jiang, Luyao Niu, Jinyuan Jia, Bo Li, Radha Poovendran

Usenix Security 2024 | Paper / Slides

SafeDecoding: Defending against Jailbreak Attacks via Safety-Aware Decoding

Zhangchen Xu, Fengqing Jiang, Luyao Niu, Jinyuan Jia, Bill Yuchen Lin, Radha Poovendran

ACL 2024 (Main, Oral) | Paper / Code / Poster / Slides

Also presented at SET LLM @ ICLR 2024

ArtPrompt: ASCII Art-based Jailbreak Attacks against Aligned LLMs

Fengqing Jiang*, Zhangchen Xu*, Luyao Niu*, Zhen Xiang, Bhaskar Ramasubramanian, Bo Li, Radha Poovendran

ACL 2024 (Main) | Paper / Code / Poster

Also presented at SET LLM @ ICLR 2024

Brave: Byzantine-Resilient and Privacy-Preserving Peer-to-Peer Federated Learning

Zhangchen Xu*, Fengqing Jiang*, Luyao Niu, Jinyuan Jia, Radha Poovendran

AsiaCCS 2024 (Poster) | Paper / Poster

Also presented at PPAI Workshop @ AAAI 2024

Identifying and Mitigating Vulnerabilities in LLM-Integrated Applications

Fengqing Jiang, Zhangchen Xu, Luyao Niu, Boxin Wang, Jinyuan Jia, Bo Li, Radha Poovendran

AsiaCCS 2024 (Poster) | Paper / Poster

Also presented at Instruction Workshop @ NeurIPS 2023

Exact Fault-Tolerant Consensus with Voting Validity

Zhangchen Xu, Yuetai Li, Chenglin Feng, Lei Zhang

IPDPS 2023 (Oral) | Paper / Slides

Wireless Distributed Consensus in Vehicle to Vehicle Networks for Autonomous Driving

Chenglin Feng, Zhangchen Xu, Xincheng Zhu, Paulo Valente Klaine, Lei Zhang

IEEE Transactions on Vehicular Technology, 2023 | Paper