Sparse higher order conditional random fields for improved sequence labeling.

Xian Qian Xiaoqian Jiang Qi Zhang Xuanjing Huang Lide Wu Sparse higher order conditional random fields for improved sequence labeling. 107 2009 ICML http://doi.acm.org/10.1145/1553374.1553483 conf/icml/2009 db/conf/icml/icml2009.html#QianJZHW09