@InProceedings{tsuruoka-tsujii-ananiadou:2009:ACLIJCNLP,
  author    = {Tsuruoka, Yoshimasa  and  Tsujii, Jun'ichi  and  Ananiadou, Sophia},
  title     = {Stochastic Gradient Descent Training for L1-regularized Log-linear Models with Cumulative Penalty},
  booktitle = {Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {477--485},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-1054}
}