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First, we use vectors to represent nodes and define popularity entropy for each node to weigh their popularities and the impact on forming a new edge. Then, we propose an algorithm to calculate the weight of each edge based on our findings that the more overlap of linked nodes they have, the heavier weight the edge has and the more popular the nodes in their overlap are, the lighter the weight of the edge is. Finally, we conduct link prediction by using the random walk with restart method considering the effect of every node and every edge. Experimental results show that user's activity in virtual world and physical world do really have great impact on each other. <\/jats:p>","DOI":"10.1155\/2014\/461780","type":"journal-article","created":{"date-parts":[[2014,2,19]],"date-time":"2014-02-19T22:08:17Z","timestamp":1392847697000},"page":"461780","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Investigating How User's Activities in Both Virtual and Physical World Impact Each Other Leveraging LBSN Data"],"prefix":"10.1177","volume":"10","author":[{"given":"Zhiwen","family":"Yu","sequence":"first","affiliation":[{"name":"School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China"}]},{"given":"Yue","family":"Yang","sequence":"additional","affiliation":[{"name":"School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China"}]},{"given":"Xingshe","family":"Zhou","sequence":"additional","affiliation":[{"name":"School of Computer Science, Northwestern Polytechnical University, Xi'an 710072, China"}]},{"given":"Yu","family":"Zheng","sequence":"additional","affiliation":[{"name":"Microsoft Research Asia, Beijing 100080, China"}]},{"given":"Xing","family":"Xie","sequence":"additional","affiliation":[{"name":"Microsoft Research Asia, Beijing 100080, China"}]}],"member":"179","published-online":{"date-parts":[[2014,2,19]]},"reference":[{"key":"B1-2014-461780","doi-asserted-by":"publisher","DOI":"10.1109\/MC.2011.65"},{"key":"B10-2014-461780","doi-asserted-by":"publisher","DOI":"10.1137\/S003614450342480"},{"key":"B2-2014-461780","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.soc.27.1.415"},{"key":"B3-2014-461780","doi-asserted-by":"publisher","DOI":"10.1002\/asi.20591"},{"key":"B4-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/1463434.1463477"},{"key":"B5-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/2020408.2020579"},{"key":"B11-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/2093973.2093990"},{"key":"B6-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/1772690.1772790"},{"key":"B7-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/2124295.2124382"},{"first-page":"233","volume-title":"Proceedings of the ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD '10)","author":"Roth M.","key":"B13-2014-461780"},{"key":"B8-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/1864349.1864380"},{"key":"B9-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/2020408.2020581"},{"key":"B12-2014-461780","doi-asserted-by":"publisher","DOI":"10.1145\/2020408.2020575"},{"key":"B15-2014-461780","doi-asserted-by":"publisher","DOI":"10.1016\/0306-4573(88)90021-0"},{"key":"B14-2014-461780","doi-asserted-by":"publisher","DOI":"10.1109\/ICDM.2006.70"}],"container-title":["International Journal of Distributed Sensor Networks"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1155\/2014\/461780","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/full-xml\/10.1155\/2014\/461780","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/journals.sagepub.com\/doi\/pdf\/10.1155\/2014\/461780","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,5,16]],"date-time":"2021-05-16T13:18:33Z","timestamp":1621171113000},"score":1,"resource":{"primary":{"URL":"http:\/\/journals.sagepub.com\/doi\/10.1155\/2014\/461780"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014,2,1]]},"references-count":15,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2014,2,1]]}},"alternative-id":["10.1155\/2014\/461780"],"URL":"https:\/\/doi.org\/10.1155\/2014\/461780","relation":{},"ISSN":["1550-1477","1550-1477"],"issn-type":[{"type":"print","value":"1550-1477"},{"type":"electronic","value":"1550-1477"}],"subject":[],"published":{"date-parts":[[2014,2,1]]}}}