@article{sparsemultinomiallogisticregressionvia,
  title = {Sparse Multinomial Logistic Regression via Approximate Message Passing},
  author = {Evan Byrne and Philip Schniter},
  year = {2015},
  eprint = {1509.04491},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1509.04491v2},
}