@article{notallcandidatesarecreatedequalaheteroge,
  title = {Not All Candidates are Created Equal: A Heterogeneity-Aware Approach to Pre-ranking in Recommender Systems},
  author = {Pengfei Tong and Siyuan Chen and Chenwei Zhang and Bo Wang and Qi Pi and Pixun Li and Zuotao Liu},
  year = {2026},
  eprint = {2603.03770},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.03770},
}