collaborators

5 papers

cs.LG2026

Metis: Learning to Jailbreak LLMs via Self-Evolving Metacognitive Policy Optimization

Huilin Zhou, Jian Zhao, Yilu Zhong +7

Red teaming is critical for uncovering vulnerabilities in Large Language Models (LLMs). While automated methods have improved scalability, existing approaches often rely on static…

cs.AI2026

Nice Fold or Hero Call: Learning Budget-Efficient Thinking for Adaptive Reasoning

Zhaomeng Zhou, Lan Zhang, Junyang Wang +2

Large reasoning models (LRMs) improve problem solving through extended reasoning, but often misallocate test-time compute. Existing efficiency methods reduce cost by compressing re…

cs.CR2026

Permit: Permission-Aware Representation Intervention for Controlled Generation in Large Language Models

Pengcheng Sun, Lan Zhang, Zhaopeng Zhang +2

Large language models (LLMs) are increasingly deployed in enterprise settings where they handle sensitive documents and user context, raising acute concerns over security and contr…

cs.CL2026

Monotonic Reference-Free Refinement for Autoformalization

Lan Zhang, Marco Valentino, André Freitas

While statement autoformalization has advanced rapidly, full-theorem autoformalization remains largely unexplored. Existing iterative refinement methods in statement autoformalizat…

cs.AI2026

FormalScience: Scalable Human-in-the-Loop Autoformalisation of Science with Agentic Code Generation in Lean

Jordan Meadows, Lan Zhang, Andre Freitas

Formalising informal mathematical reasoning into formally verifiable code is a significant challenge for large language models. In scientific fields such as physics, domain-specifi…