@article{JMLR:v10:xu09c,
  author  = {Yuehua Xu and Alan Fern and Sungwook Yoon},
  title   = {Learning Linear Ranking Functions for Beam Search with Application to Planning},
  journal = {Journal of Machine Learning Research},
  year    = {2009},
  volume  = {10},
  number  = {54},
  pages   = {1571--1610},
  url     = {http://jmlr.org/papers/v10/xu09c.html}
}