@InProceedings{zhu-EtAl:2007:main,
  author    = {Zhu, Xiaojin  and  Goldberg, Andrew  and  Van Gael, Jurgen  and  Andrzejewski, David},
  title     = {Improving Diversity in Ranking using Absorbing Random Walks},
  booktitle = {Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Proceedings of the Main Conference},
  month     = {April},
  year      = {2007},
  address   = {Rochester, New York},
  publisher = {Association for Computational Linguistics},
  pages     = {97--104},
  url       = {http://www.aclweb.org/anthology/N/N07/N07-1013}
}