@inproceedings{fastbidirectionalprobabilityestimationin,
  title = {Fast Bidirectional Probability Estimation in Markov Models},
  author = {Siddhartha Banerjee and Peter Lofgren},
  year = {2015},
  booktitle = {NeurIPS 2015 12},
  url = {http://papers.nips.cc/paper/5815-fast-bidirectional-probability-estimation-in-markov-models},
}