@article{lexisanoptimizationframeworkfor,
  title = {Lexis: An Optimization Framework for Discovering the Hierarchical Structure of Sequential Data},
  author = {Payam Siyari and Bistra Dilkina and Constantine Dovrolis},
  year = {2016},
  eprint = {1602.05561},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1602.05561v3},
}