@article{dataevolverautomaticdatapreparationforla, title = {DataEvolver: Automatic Data Preparation for Large Language Models through Multi-Level Self-Evolving}, author = {Chao Deng and Shaolei Zhang and Ju Fan and Xiaoyong Du}, year = {2026}, eprint = {2606.07001}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2606.07001}, }