都市部における人の流れの流域パターンに関する普遍的な特性を発見

都市部における人の流れの流域パターンに関する普遍的な特性を発見

WRHIからのお知らせおすすめ

ビッグデータ数理科学研究ユニット 高安美佐子教授Shlomo Havlin特任教授の共著論文

“Universal scaling laws of collective human flow patterns in urban regions”

が、Scientific Reports に掲載されました。(DOI: 10.1038/s41598-020-77163-2 

詳しくはこちら 

 

<Abstract>

Detail observation of human locations became available recently by the development of information technology such as mobile phones with GPS (Global Positioning System). We analyzed temporal changes of global human flow patterns in urban regions based on mobile phones’ GPS data in 9 large cities in Japan. By applying a new concept of drainage basins in analogous to river flow patterns, we discovered several universal scaling relations. These include, the number of moving people in a drainage basin of diameter L is proportional to L3L3 in the morning rush hour, which is surprisingly different from reasonable intuition of proportionality to the 2 dimensional area, L2L2. We show that this unexpected 3 dimensional feature is related to the strong attraction of the city center to become a 3 dimensional structure due skyscrapers.