@article{JMLR:v18:15-468,
  author  = {Igor Melnyk and Arindam Banerjee},
  title   = {A Spectral Algorithm for Inference in Hidden semi-Markov Models},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {35},
  pages   = {1--39},
  url     = {http://jmlr.org/papers/v18/15-468.html}
}