@article{x4vallearningneuralsurrogatesforvariance,
  title = {X4Val: Learning Neural Surrogates for Variance-Reduced Policy Evaluation},
  author = {Rachel Luo and Michael Watson and Apoorva Sharma and Heng Yang and Han Qi and Edward Schmerling and Sushant Veer and Boris Ivanovic and Marco Pavone},
  year = {2026},
  eprint = {2606.05159},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.05159},
}