1. Class-based N-gram models of natural language;Brown;Computational Linguistics,1992
2. Chang , A.X. Manning , C.D. 2012 3735 3740
3. Chang , H.W. Lee , D. Eltaher , M. Lee , J. 2012 111 118
4. Chen , F. Joshi , D. Miura , Y. Ohkuma , T. 2014 1 6
5. Cheng , Z. Caverlee , J. Lee , K. 2010 759 768