@article{optimalalgorithmsinlinearregressionunder, title = {Optimal Algorithms in Linear Regression under Covariate Shift: On the Importance of Precondition}, author = {Yuanshi Liu and Haihan Zhang and Qian Chen and Cong Fang}, year = {2025}, eprint = {2502.09047}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2502.09047v1}, }