False instance grammatical feature extraction algorithm based on String Kernel and KPCA
LV Wei 1,2,LIN Wen-chang 1,YAO Zheng-an 1,LI Lei 1
Computer Engineering and Applications . 2009, (20): 136 -139 .  DOI: 10.3778/j.issn.1002-8331.2009.20.041