计算机科学 ›› 2014, Vol. 41 ›› Issue (6): 264-268.doi: 10.11896/j.issn.1002-137X.2014.06.052
罗琦,缪昕杰,魏倩
LUO Qi,MIAO Xin-jie and WEI Qian
摘要: 协同过滤算法是电子商务和信息系统中非常重要的一门技术。其中用户相似度度量方法的科学性至关重要。为了获得更好的精度,采用用户间共同评分数目来动态调节原相似度,以更准确地反映用户间相似度的真实性。在此基础上,根据社会网络中FTL模型(follow the leader)的思想,对新用户或找不到最近邻的用户采用基于专家信任度的预测算法代替传统相似度来预测用户的评分,弥补了传统算法的不足。实验表明,算法提高了预测评分的准确性和推荐质量,并缓解了新用户的冷启动问题。
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