Skrull: Towards Efficient Long Context Fine-tuning through Dynamic Data Scheduling - Xu, Hongtao; Shen, Wenting; Wei, Yuanxin; Wang, Ang; Runfan, Guo; Wang, Tianxing; Li, Yong; Li, Mingzhen; Jia, Weile (Advances in Neural Information Processing Systems, 2025)