GroupLens: an open architecture for collaborative filtering of netnews
CSCW '94 Proceedings of the 1994 ACM conference on Computer supported cooperative work
Learning and Revising User Profiles: The Identification ofInteresting Web Sites
Machine Learning - Special issue on multistrategy learning
CSCW '98 Proceedings of the 1998 ACM conference on Computer supported cooperative work
Item-based collaborative filtering recommendation algorithms
Proceedings of the 10th international conference on World Wide Web
Information Sciences: an International Journal
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With the expansion of the Internet services, providing personalized product recommendations has become one of the most important ways to attract customers. Especially, collaborative recommender systems have achieved widespread success on the web. Information of products is recommended to the users based on their nearest "neighbors" who have similar interests. It is widely known that there is a sparsity problem in such systems. However, according to our research, there are other problems: one is that the typical collaborative algorithm loses some important parameter when it predicts the ratings, because there might be a strong similarity between the users who give very different ratings. Another is that the classification information of resources is not used. To solve these problems, we have proposed a recommendation algorithm combining the user-based classified regression and the item-based filtering. The experiment results show that performance is improved after applying the new algorithm.