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1. 湖州师范学院信息与控制技术研究所 湖州 313001
2. 温州大学建模与数据挖掘研究所 温州 325035
3. 浙江财经大学信息学院 杭州 310018
[ "王瑞琴,女,博士,湖州师范学院讲师,主要研究方向为数据挖掘、自然语言处理。" ]
[ "潘俊,男,博士,温州大学讲师,主要研究方向为机器学习、数据挖掘。" ]
[ "李一啸,男,博士,浙江财经大学副教授,主要研究方向为复杂系统、复杂网络。" ]
网络出版日期:2015-06,
纸质出版日期:2015-06-20
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王瑞琴, 潘俊, 李一啸. 基于多社交数据源的协同推荐方法研究[J]. 电信科学, 2015,31(6):68-74.
Ruiqin Wang, Jun Pan, Yixiao Li. Research on Collaborative Recommendation Method Based on Multiple Data Sources of Social Network[J]. Telecommunication science, 2015, 31(6): 68-74.
王瑞琴, 潘俊, 李一啸. 基于多社交数据源的协同推荐方法研究[J]. 电信科学, 2015,31(6):68-74. DOI: 10.11959/j.issn.1000-0801.2015113.
Ruiqin Wang, Jun Pan, Yixiao Li. Research on Collaborative Recommendation Method Based on Multiple Data Sources of Social Network[J]. Telecommunication science, 2015, 31(6): 68-74. DOI: 10.11959/j.issn.1000-0801.2015113.
协同过滤推荐作为一种有效的推荐方法,普遍存在数据稀疏性和冷启动问题,利用社交网络的多项数据源对协同推荐方法进行了改进。为了克服评分矩阵的稀疏性问题,提出结合用户评分相似度和用户信任度选择推荐邻居,同时对用户相似度计算进行了改进;提出了一种简单有效的信任推理方法,能够识别出用户间隐含的间接信任关系,进一步缓解了数据稀疏性问题;为了解决推荐系统的冷启动问题,提出综合利用项目的类型属性信息和领域专家信息进行联合推荐。实验结果表明,提出的改进策略非常有效,在精度和召回率方面都较已有方法具有明显改善。
As an effective recommendation method,collaborative filtering typically has the data sparsity and cold-start problems. It was proposed that using multiple data sources of social network to overcome the above problems. First of a11,both the rating similarity and the social trust between users were considered to resolve the data sparsity problem. Then a simple and effective trust reasoning method was proposed to identify the implicit trust relationship between users. In order to solve the cold-start problem,information of the category of items and domain experts was used for joint recommendation. Experimental results show that the proposed algorithm has significantly better precision and reca11 than existing methods.
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