@article{JMLR:v26:24-1521,
  author  = {Xuefeng Gao and Jiale Zha and Xun Yu Zhou},
  title   = {Reward-Directed Score-Based Diffusion Models via q-Learning},
  journal = {Journal of Machine Learning Research},
  year    = {2025},
  volume  = {26},
  number  = {302},
  pages   = {1--46},
  url     = {http://jmlr.org/papers/v26/24-1521.html}
}