一种基于位置和时间信息的兴趣点推荐方法
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TP309

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国家自然科学基金资助项目(62002037);重庆市自然科学基金面上资助项目(cstc2019jcyj-msxmX0588)。


A point-of-interest recommendation method based on location and time information
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    摘要:

    在社交网络中,人们往往会访问自己比较感兴趣和离自己比较近的地方,而兴趣点推荐就是根据用户的兴趣偏好能够有效地帮助用户选择自己比较感兴趣的地点。笔者提出一种基于位置和时间信息的兴趣点推荐方法。该方法从兴趣点的角度出发分为3个步骤,首先使用用户历史访问的兴趣点的位置信息计算用户历史访问兴趣点和用户未曾访问过的兴趣点的相似度;然后使用时间信息,将一天划分为不同的时间段,统计所有兴趣点在一天中不同时间段被签到的次数,计算用户历史访问兴趣点和用户未曾访问过的兴趣点的相似度;最后根据兴趣点的位置和时间信息综合计算用户历史访问兴趣点与用户未曾访问兴趣点的相似度,根据Top-N策略向用户推荐用户未曾访问过的兴趣点。在现实社会中的真实数据集上进行实验验证,实验结果表明笔者提出的方法是有效的。

    Abstract:

    In social networks, people tend to visit places that are more interesting and close to themselves. Point-of-interest recommendation based on user’s interest preferences can effectively help users choose places which they are interested in. In this paper, a point-of-interest recommendation method based on location and time information was proposed. Three steps from the perspective of the point-of-interest were involved. Firstly, the similarity between the user history access point-of-interest and the point-of-interest that the user has not visited was calculated by using the location information of the point-of-interest accessed by the user. Then, the day is divided into different time periods, during which the number of times all points of interest are checked in is counted. The similarity between the user’s historical visit of point-of-interest and the point-of-interest that the user has not visited was calculated by using the time information. Finally, the similarity between the user history access point of interest and the user’s non-visited point-of-interest was calculated according to the location and time information of the point-of-interest. The point-of-interest that the user has not visited was recommended according to the Top-N policy. Experimental verification was carried out on the real data set in the real society. The experimental results show that the proposed method is effective.

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谭伟,贾朝龙,桑春艳.一种基于位置和时间信息的兴趣点推荐方法[J].重庆大学学报,2022,45(7):93-102.

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  • 收稿日期:2021-01-12
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  • 在线发布日期: 2022-07-27
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