Wenjie Du

Welcome to my homepage!🤗 I'm Wenjie Du (杜文杰), a research intern in ENCODE Lab of Prof. Huan Wang at Westlake University. I obtained B. Eng. in Computer Science and Technology from Sichuan University in 2024 and have received the National Scholarship in 2023. I was fortunate to work as a research assistant at HKUST in 2025, a research intern at the Institute for AI Industry Research (AIR), Tsinghua University in 2024, and a software developer intern at ByteDance in 2023. I am grateful to all my mentors, supervisors, and friends for their kindness and support throughout my journey!

Email  /  CV  /  Scholar  /  Linkedin  /  Github

I am seeking PhD positions starting Spring/Fall 2026.

Research

My research interests lie in large language models, machine learning systems, and multi-agent systems. I focus on uncovering the fundamental properties of large language models to guide the design of efficient, robust, and reliable ML systems. I am also working towards building collaborative multi-agent systems that leverage multiple LLMs to tackle complex problems.

An RL-based framework that identifies reasoning-critical attention heads in LLMs to enable KV cache compression, achieving 20-50% reduction in cache size with minimal performance loss.

A document-centered framework that converts mobile UI automation into code generation, enabling the script-based mobile GUI agent to achieve higher success rates and lower latency than step-wise agents.

An efficient mobile app exploration agent that uses LLMs for knowledge maintenance rather than action generation, achieving the highest coverage with 148x lower cost than baselines.

This webpage is built upon the source code of Jon Barron.