Decouple Searching from Training: Scaling Data Mixing via Model Merging for Large Language Model Pre-training. - Shengrui Li; Fei Zhao 012; Kaiyan Zhao; Jieying Ye; Haifeng Liu 001; Fangcheng Shi; Zheyong Xie; Yao Hu 002; Shaosheng Cao (CoRR, 2026)