关键词: 推荐系统, 协同过滤, 相似度, 模糊权重

Abstract:

In the traditional collaborative filtering algorithm,the calculation of similarity is based directly on user ratings,which are subject to uncertain factors,and thus the user preferences information is inaccurate by Numerical rating.This paper defines several membership functions of fuzzy sets and puts forward the similarity calculation method based on fuzzy logic.The experimental results show that the similarity based on fuzzy weight effectively improves the accuracy of the recommendation system.

Key words: recommendation system;collaborative filtering;similarity;fuzzy weight