UniGist: Towards General and Hardware-aligned Sequence-level Long Context Compression - Deng, Chenlong; Zhang, Zhisong; Mao, Kelong; Li, Shuaiyi; Fang, Tianqing; Zhang, Hongming; Mi, Haitao; Yu, Dong; Dou, Zhicheng (Advances in Neural Information Processing Systems, 2025)