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Pei Fu

4 papers indexed

arxivcs.CV2026-07-09

Switch-Reasoner: Learn When to Think in Multitask Mixtures via Reinforcement Learning

Yiyang Fang, Pei Fu, Jinjie Li, Jian Liang, Wenke Huang, Ruijie Luo, et al.

Multimodal Large Language Models (MLLMs) often follow a fixed Think-then-Answer paradigm, which is inefficient in heterogeneous multitask settings because simple inputs may not require explicit reasoning while difficult ones can benefit substantially from it. Learning when to thi…

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arxivcs.CV2026-07-09

DeltaV: Thinking with Visual State Updates in Unified Large Multimodal Models

Pengjie Wang, Linger Deng, Zujia Zhang, Shaojie Zhang, Zhenbo Luo, Pei Fu, et al.

Current Unified Large Multimodal Models (ULMMs) support interleaved multimodal reasoning through textual reasoning and intermediate visual states, but typically generate each visual state as a full image. This full-image generation paradigm introduces substantial visual-token red…

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arxivcs.CLcs.AIcs.CVcs.LGcs.MM2026-07-05

UI-MOPD: Multi-Platform On-Policy Distillation for Continual GUI Agent Learning

Niu Lian, Alan Chen, Zhehao Yu, Chengzhen Duan, Fazhan Liu, Hui Liu, et al.

Recent advances in multimodal foundation models and agent systems have driven GUI agents from single-platform task execution toward cross-platform interaction. However, building multi-platform GUI agents remains challenging. On one hand, high-quality and executable cross-platform…

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