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一种解决协同过滤系统冷启动问题的新算法 被引量:14

A new algorithm of cold-start in a collaborative filtering system
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摘要 在基于矩阵分解的协同过滤算法中,新用户和新项目的冷启动问题是所面临的难点问题之一。通过运用基于K近邻的属性——特征映射的算法得到新用户和新项目的特征向量,解决了该类协同过滤算法所面临的冷启动问题。在真实的实验数据集上验证了该算法的有效性。 In the collaborative filtering algorithms based on matrix decomposition, the new user and new item cold-start is a difficult problem. The problem of cold-start was solved by using the attribute-to-feature a mapping algorithm based on K-nearest-neighbor(KNN) to get the feature vectors of the new user and new item. The experimental evaluation u- sing a real-world dataset showed the effectiveness of this method.
作者 李改 李磊
出处 《山东大学学报(工学版)》 CAS 北大核心 2012年第2期11-17,44,共8页 Journal of Shandong University(Engineering Science)
基金 国家自然科学基金资助项目(61003140 61033010) 中山大学高性能与网格计算平台资助项目
关键词 推荐系统 协同过滤 冷启动 交叉最小二乘法 K近邻 recommendation systems collaborative filtering cold-start alternating least squares K-nearest-neighbor
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