TY - 中国邮电高校学报(英文) A1 - Yao Wenbin, Hu Fangyi T1 - Improvement of LDA model with time factor for collaborative filtering Y1 - 2020-03-10 00:00:00.0 JF - 中国邮电高校学报(英文) JO - 中国邮电高校学报(英文) SP - 54 EP - 62 VL - 26 IS - 6 UR - {https://jcupt.bupt.edu.cn/CN/10.19682/j.cnki.1005-8885.2019.1026} N1 - 10.19682/j.cnki.1005-8885.2019.1026 ER -