SpatialVLA: Exploring Spatial Representations for Visual-Language-Action Model. - Delin Qu; Haoming Song; Qizhi Chen; Yuanqi Yao; Xinyi Ye; Yan Ding; Zhigang Wang 002; JiaYuan Gu; Bin Zhao 001; Dong Wang 028; Xuelong Li 001 (CoRR, 2025)