TY - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) A1 - HE Shi-zhu, WANG Ming-wen, ZHOU Jun-jun, SHI Song T1 - Research on large-scale text hierarchies combining relevant category information Y1 - JF - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) JO - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) SP - 58 EP - 62 VL - 46 IS - 5 UR - http://lxbwk.njournal.sdu.edu.cn N1 - ER -