ACR: Adaptive Context Refactoring via Context Refactoring Operators for Multi-Turn Dialogue. - Jiawei Shen; Jia Zhu 003; Hanghui Guo; Weijie Shi; Yue Cui 001; Qingyu Niu; Guoqing Ma; Yidan Liang; Jingjiang Liu; Yiling Wang; Shimin Di; Jiajie Xu 001 (CoRR, 2026)