arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.15091cs.IR
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使用惰性随机游走寻找动态推荐的本地专家

Finding Local Experts for Dynamic Recommendations Using Lazy Random Walk

Diyah Puspitaningrum, Julio Fernando, Edo Afriando, Ferzha Putra Utama, Rina Rahmadini, Y. Pinata

摘要:

基于统计的隐私感知推荐系统通过从社交联系人交互日志中提取知识来使推荐更强大,但不幸的是,它们是静态的。此外,当地专家的建议有助于在特定地区找到特定的业务类别。我们提出了一个动态推荐算法的基础上,懒惰的随机游走,建议排名第一的购物场所潜在感兴趣的游客。我们考虑地方权威和专题权威。该算法在印度尼西亚5个城市的FourSquare购物数据集上进行了测试,k步为5,7,9的(懒惰)随机游走,并将结果与其他最先进的排名技术进行了比较。结果表明,该方法具有较高的评分精度(k=5时,评分精度分别为0.5,0.37和0.26)。该算法还显示了关于执行时间的可扩展性。动态性的优点是数据库用于为推荐系统提供动力;不需要非常频繁地更新以产生好的推荐。

英文摘要:

Statistics based privacy-aware recommender systems make suggestions more powerful by extracting knowledge from the log of social contacts interactions, but unfortunately, they are static. Moreover, advice from local experts effective in finding specific business categories in a particular area. We propose a dynamic recommender algorithm based on a lazy random walk that recommends top-rank shopping places to potentially interested visitors. We consider local authority and topical authority. The algorithm tested on FourSquare shopping data sets of 5 cities in Indonesia with k-steps of 5,7,9 of (lazy) random walks and compared the results with other state-of-the-art ranking techniques. The results show that it can reach high score precisions (0.5, 0.37, and 0.26 respectively on precision at 1, precision at 3, and precision at 5 for k=5). The algorithm also shows scalability concerning execution time. The advantage of dynamicity is the database used to power the recommender system; no need to be very frequently updated to produce a good recommendation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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