计算机与现代化

• 人工智能 • 上一篇    下一篇

一种结合专家信任的POI推荐算法

  

  1. (扬州大学信息工程学院,江苏扬州225100)
  • 收稿日期:2019-05-13 出版日期:2019-12-11 发布日期:2019-12-11
  • 作者简介:桂易琪(1981-),女,江西临川人,讲师,博士,研究方向:多媒体网络,推荐算法,智能信息处理,E-mail: yqgui@yzu.edu.cn; 田星晨(1993-),男,江苏大丰人,硕士研究生,研究方向:推荐算法,E-mail: alkaidprince@vip.qq.com。
  • 基金资助:
    江苏省自然科学基金资助项目(BK20150459)

A POI Recommendation Algorithm Combined with Expert Trust

  1. (School of Information Engineering, Yangzhou University, Yangzhou 225100, China)
  • Received:2019-05-13 Online:2019-12-11 Published:2019-12-11

摘要: 针对目前的POI(point-of-interest)推荐算法未能很好地处理签到数据稀疏的用户的推荐问题,提出一种结合专家信任的POI推荐算法。根据用户签到信息,选取一定时空范围内的用户签到数据,结合签到次数和签到范围的影响来选取专家用户并进行推荐,同时使用核函数来对推荐结果进行优化,得到最终的Top-N推荐列表。实验结果表明,该算法在召回率和准确率上都有所提高。

关键词: POI, 时空因素, 签到次数, 签到范围, 核函数

Abstract:  Aiming at the recommendation problem that the current POI (point-of-interest) recommendation algorithm fails to deal with the sparse users of the check-in data, this paper proposes a POI recommendation algorithm combined with expert trust. According to the user’s check-in information, this algorithm selects the user check-in data in a certain space-time range, selects the expert user and makes the recommendation by combining the influence of check-in number and check-in range, uses the kernel function to optimize the recommendation result, and gets the final Top-N recommendation list. Experimental results show that the algorithm is improved in both recall rate and accuracy rate.

Key words: POI, space-time factors, check-in numbers, check-in range, kernel function

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