villa-X: Enhancing Latent Action Modeling in Vision-Language-Action Models - Chen, Xiaoyu; Wei, Hangxing; Zhang, Pushi; Zhang, Chuheng; Wang, Kaixin; Guo, Yanjiang; Yang, Rushuai; Wang, Yucen; Xiao, Xinquan; Zhao, Li; Chen, Jianyu; Bian, Jiang (International Conference on Learning Representations, 2026)