From Collapse to Control: Understanding and Extending Context Length in Emerging Hybrid Models via Universal Position Interpolation - Shen, Haochen; Wertheimer, Davis; Wang, Zheng; Goon, Garrett; Liu, Derrick; Wang, Naigang; Srivatsa, Mudhakar; Ganti, Raghu; Zhang, Minjia (International Conference on Learning Representations, 2026)