@article{atutorialondualdecompositionand,
  title = {A Tutorial on Dual Decomposition and Lagrangian Relaxation for Inference in Natural Language Processing},
  author = {Alexander M. Rush and Michael Collins},
  year = {2014},
  eprint = {1405.5208},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1405.5208v1},
}