Efficient Multiclass Implementations of L1-Regularized Maximum Entropy

Patrick Haffner Steven J. Phillips Robert E. Schapire Efficient Multiclass Implementations of L1-Regularized Maximum Entropy http://arxiv.org/abs/cs/0506101 2005 CoRR abs/cs/0506101 db/journals/corr/corr0506.html#abs-cs-0506101