@article{JMLR:v27:25-0632,
  author  = {Yongcun Song and Zimeng Wang and Xiaoming Yuan and Hangrui Yue},
  title   = {A Single-Loop Stochastic Proximal Quasi-Newton Method for Large-Scale Nonsmooth Convex Optimization},
  journal = {Journal of Machine Learning Research},
  year    = {2026},
  volume  = {27},
  number  = {103},
  pages   = {1--43},
  url     = {http://jmlr.org/papers/v27/25-0632.html}
}