LocCa: Visual Pretraining with Location-aware Captioners - Wan, Bo; Tschannen, Michael; Xian, Yongqin; Pavetic, Filip; Alabdulmohsin, Ibrahim; Wang, Xiao; Pinto, André Susano; Steiner, Andreas; Beyer, Lucas; Zhai, Xiaohua (Advances in Neural Information Processing Systems, 2024)