Learning To Draft: Adaptive Speculative Decoding with Reinforcement Learning - Zhang, Jiebin; Yu, Zhenghan; Wang, Liang; Yang, Nan; Yu, Eugene; Li, Zheng; Song, Yifan; Zhu, Dawei; Zhang, Xingxing; Wei, Furu; Li, Sujian (International Conference on Learning Representations, 2026)