计算机科学 ›› 2017, Vol. 44 ›› Issue (2): 267-269.doi: 10.11896/j.issn.1002-137X.2017.02.044
王建,黄佳进
WANG Jian and HUANG Jia-jin
摘要： 推荐系统是解决互联网信息过载问题的有效途径之一,其中具有代表性的是协同过滤推荐。传统的协同过滤推荐方法只考虑评分信息,而评论信息则包含了用户和物品更具体的特征信息。使用主题模型LDA并结合评分信息和评论信息,提出了一种基于用户改进的LDA算法。假设每个用户下隐含着主题分布,主题下隐含着物品分布,同时 词语的分布由主题和物品共同决定,该算法根据潜在主题分布挖掘用户兴趣进而完成推荐。实验结果表明,改进的算法有效提升了推荐质量。
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