RegTrieve: Reducing System-Level Regression Errors for Machine Learning Systems via Retrieval-Enhanced Ensemble. - Junming Cao; Xuwen Xiang; Mingfei Cheng; Bihuan Chen 001; Xinyan Wang; You Lu 005; Chaofeng Sha; Xiaofei Xie; Xin Peng 001 (Proc. ACM Softw. Eng., 2025)