@article{continuoustimedynamictopicmodels,
  title = {Continuous Time Dynamic Topic Models},
  author = {Chong Wang and David Blei and David Heckerman},
  year = {2012},
  eprint = {1206.3298},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1206.3298v2},
}