@article{mergemixoptimizingmidtrainingdatamixture,
  title = {MergeMix: Optimizing Mid-Training Data Mixtures via Learnable Model Merging},
  author = {Jiapeng Wang and Changxin Tian and Kunlong Chen and Ziqi Liu and Jiaxin Mao and Wayne Xin Zhao and Zhiqiang Zhang and Jun Zhou},
  year = {2026},
  eprint = {2601.17858},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.17858},
}