MemSim: A Bayesian Simulator for Evaluating Memory of LLM-based Personal Assistants - Zhang, Zeyu; Dai, Quanyu; Chen, Luyu; Jiang, Zeren; Li, Rui; Zhu, Jieming; Chen, Xu; Xie, Yi; Dong, Zhenhua; Wen, Ji-Rong (Advances in Neural Information Processing Systems, 2025)