collaborators

6 papers

cs.AI2026

AppDeltaWorld: Transition-Grounded Delta Code World Model for Mobile GUI Agents

Weikai Xu, Yunren Feng, Haoxiang Lei +6

Mobile GUI agents can operate apps through pixel perception and touch actions, making them a promising interface for collecting and improving long-horizon mobile interaction polici…

cs.AI2026

How Mobile World Model Guides GUI Agents?

Weikai Xu, Kun Huang, Yunren Feng +10

Recent advances in vision-language models have enabled mobile GUI agents to perceive visual interfaces and execute user instructions, but reliable prediction of action consequences…

cs.CL2026

MobileIPL: Enhancing Mobile Agents Thinking Process via Iterative Preference Learning

Kun Huang, Weikai Xu, Yuxuan Liu +6

The Chain of Action-Planning Thoughts (CoaT) paradigm has been shown to improve the reasoning performance of VLM-based mobile agents in GUI tasks. However, the scarcity of diverse…

cs.CL2026

CoME: Empowering Channel-of-Mobile-Experts with Informative Hybrid-Capabilities Reasoning

Yuxuan Liu, Weikai Xu, Kun Huang +9

Mobile Agents can autonomously execute user instructions, which requires hybrid-capabilities reasoning, including screen summary, subtask planning, action decision and action funct…

cs.CL2026

Mobile-Bench-v2: A More Realistic and Comprehensive Benchmark for VLM-based Mobile Agents

Weikai Xu, Zhizheng Jiang, Yuxuan Liu +7

VLM-based mobile agents are increasingly popular due to their capabilities to interact with smartphone GUIs and XML-structured texts and to complete daily tasks. However, existing…

cs.LG2026

R^3: Replay, Reflection, and Ranking Rewards for LLM Reinforcement Learning

Zhizheng Jiang, Kang Zhao, Weikai Xu +5

Large reasoning models (LRMs) aim to solve diverse and complex problems through structured reasoning. Recent advances in group-based policy optimization methods have shown promise…