Data Analysis for the National Putonghua Proficiency Test
WANG Lu1,2, ZHAO Xinru1, XIE Zan2, YAN Zhiyu2, TAN Junhua1,XIAO Yunpeng2, LI Qiao2, ZHANG Xuebo2,YE Weiping2
中文信息学报 . 2010, (4): 104 -111 .