DAAC: Discrepancy-Aware Adaptive Contrastive Learning for Medical Time series - WANG, Yifan; Ai, Hongfeng; li, ruiqi; Jiang, Maowei; Liu, Quangao; Dong, Jiahua; kang, ruiyuan; Liang, Alan; Wang, Zihang; liu, ruikai; Jiang, Cheng; Li, Chenzhong (Advances in Neural Information Processing Systems, 2025)