@article{latenttreemodelsforhierarchicaltopic,
  title = {Latent Tree Models for Hierarchical Topic Detection},
  author = {Peixian Chen and Nevin L. Zhang and Tengfei Liu and Leonard K. M. Poon and Zhourong Chen and Farhan Khawar},
  year = {2016},
  eprint = {1605.06650},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1605.06650v2},
}