Multiclass composite N-gram language model based on connection direction.

Hirofumi Yamamoto Yoshinori Sagisaka Multiclass composite N-gram language model based on connection direction. 108-114 2003 34 Systems and Computers in Japan 7 http://dx.doi.org/10.1002/scj.1210 db/journals/scjapan/scjapan34.html#YamamotoS03