The research group of Associate Professor Takaaki Aoki of the Faculty of Education, Kagawa University, Associate Professor Shota Fujishima of the Graduate School of Economics, Hitotsubashi University, and Associate Professor Naoya Fujiwara of the Graduate School of Information Science, Tohoku University is behind the movement behavior data of people. We have developed a method to visualize urban space by extracting the attractive force (potential field).
According to Tohoku University, people's movement behavior data can be measured in real time due to the spread of mobile phones, and it is used for disaster prevention, marketing, urban transportation planning, etc., but the amount of data is too large to map the whole picture. It was difficult to grasp above.
Therefore, the research group quantified the potential force, which is the force that attracts the flow of people in each area, and visualized the overall picture of the flow of people.As a result, it has become possible to drop the inflow and outflow points of people's flow on the map instead of the densely populated areas.
Applying this to the Tokyo metropolitan area, Chiyoda Ward, Chuo Ward, Minato Ward, Shibuya Ward, and Shinjuku Ward continue to be the top five inflow points from 1988 to 2018, while Tachikawa City, Tokyo, 5 from 1998. It was confirmed that Omiya Ward, Saitama City has been developing as a new inflow point since the year.
A similar analysis in London, England, found that the central and redevelopment areas were inflow points.
Paper information:[Scientific reports] Urban spatial structures from human flow by Hodge-Kodaira decomposition
