TY - Computer Science A1 - GAO Fa-zhan, HUANG Meng-xing and ZHANG Ting-ting T1 - Collaborative Filtering Recommendation Algorithm Based on User Characteristics and Expert Opinions Y1 - 2018-11-13 JF - Computer Science JO - Computer Science SP - 103 EP - 106 VL - 44 IS - 2 UR - https://www.jsjkx.com N1 - 10.11896/j.issn.1002-137X.2017.02.014 ER -