@article{breakingvalidityinducedboundariestoexpan,
  title = {Breaking Validity-Induced Boundaries to Expand Algorithm Search Space: A Two-Stage AST-Based Operator for LLM-Driven Automated Heuristic Evolution},
  author = {Sun Shengming and Shi Jialong},
  year = {2026},
  eprint = {2604.16420},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.16420},
}