Ferret-UI 2: Mastering Universal User Interface Understanding Across Platforms - LI, Zhangheng; You, Keen; Zhang, Haotian; Feng, Di; Agrawal, Harsh; Li, Xiujun; Moorthy, Mohana; Nichols, Jeffrey; Yang, Yinfei; Gan, Zhe (International Conference on Learning Representations, 2025)