TY - Journal of Shandong University(Engineering Science) A1 - LIU Dong-hui1,2, JIANG Wei1* T1 - Research on Web negative information mining based on event ontology Y1 - 2012-10-20 JF - Journal of Shandong University(Engineering Science) JO - Journal of Shandong University(Engineering Science) SP - 35 EP - 40 VL - 42 IS - 5 UR - http://gxbwk.njournal.sdu.edu.cn N1 - ER -