Toward tighter integration of web search with a geographic information system
Proceedings of the 15th international conference on World Wide Web
Why we twitter: understanding microblogging usage and communities
Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 workshop on Web mining and social network analysis
Visualizing hot spot analysis result based on mashup
Proceedings of the 2009 International Workshop on Location Based Social Networks
Monitoring geo-social activities through micro-blogging sites
DASFAA'10 Proceedings of the 15th international conference on Database systems for advanced applications
Inferring human mobility patterns from anonymized mobile communication usage
Proceedings of the 10th International Conference on Advances in Mobile Computing & Multimedia
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The explosive growth of the smartphones market and social network sites such as the Twitter has enabled to share numerous short messages reflecting our daily lives and social events from outside their homes or offices. Compared to conventional blogging sites, micro-blogging sites through mobile network enable us to easily write and share their daily logs without any spatial or temporal restrictions. Such mass geo-tagged and time-stamped micro-blogs can inform us about social patterns, regardless of their scale, time, or significance. We investigate characteristic patterns in urban areas such as populated areas from the movement histories of mass mobile micro-bloggers. In particular, some interesting movement patterns can be frequently observed in urban areas using our two measures such as aggregation and dispersion. We also present experimental results in determining urban characteristics from actual micro-blog dataset from the Twitter.