Advancing Complex Video Object Segmentation via Progressive Concept Construction - Zhang, Zhixiong; Ding, Shuangrui; Dong, Xiaoyi; He, Songxin; Lin, Jianfan; Tang, Junsong; Zang, Yuhang; Cao, Yuhang; Lin, Dahua; Wang, Jiaqi (International Conference on Learning Representations, 2026)