@InProceedings{gonzalezbrenes-mostow:2011:SIGDIAL2011,
  author    = {Gonz\'{a}lez-Brenes, Jos\'{e}  and  Mostow, Jack},
  title     = {Which System Differences Matter? Using L1/L2 Regularization to Compare Dialogue Systems},
  booktitle = {Proceedings of the SIGDIAL 2011 Conference},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon},
  publisher = {Association for Computational Linguistics},
  pages     = {8--17},
  url       = {http://www.aclweb.org/anthology/W11-2003}
}