A Token-level Text Image Foundation Model for Document Understanding. - Tongkun Guan; Zining Wang; Pei Fu; Zhengtao Guo; Wei Shen 002; Kai Zhou; Tiezhu Yue; Chen Duan; Hao Sun; Qianyi Jiang; Junfeng Luo; Xiaokang Yang 001 (CoRR, 2025)