@article{JMLR:v23:21-0889,
  author  = {Lu Zhang and Bob Carpenter and Andrew Gelman and Aki Vehtari},
  title   = {Pathfinder:  Parallel quasi-Newton variational inference},
  journal = {Journal of Machine Learning Research},
  year    = {2022},
  volume  = {23},
  number  = {306},
  pages   = {1--49},
  url     = {http://jmlr.org/papers/v23/21-0889.html}
}