@inproceedings{CTT100660075,
  author = {Song Liu and John Quinn and M.U. Gutmann and Masashi Sugiyama},
  title = {Direct learning of sparse changes in Markov networks by density ratio estimation},
  booktitle = {},
  year = 2013,
}

@inproceedings{CTT100660108,
  author = {Liu, S. and Quinn, J. and Gutmann, M.U. and &Sugiyama, M.},
  title = {Direct learning of sparse changes in Markov networks by density ratio estimation},
  booktitle = {IEICE technical report},
  year = 2013,
}