詳しくはこちらをご覧ください．
http://www.mcl.iis.u-tokyo.ac.jp/research/sakamaki.pdf
マイクロブログのジオタグを用いた行動パターンの推定
Sezaki & Nishiyama Laboratory
Institute of Industrial Science / Center for Spatial Information Science in The University of Tokyo
Institute of Industrial Science / Center for Spatial Information Science in The University of Tokyo