Risk Index of Regional Infection Expansion of COVID-19: Moving Direction Entropy Study Using Mobility Data and Its Application to Tokyo

Yukio Ohsawa   ¹ , Prof Dr ;   Yi Sun   ¹ , MCom ;   Kaira Sekiguchi   ¹ , PhD ;   Sae Kondo   ^{2, 3} , Prof Dr ;   Tomohide Maekawa   ⁴ , MEng ;   Morihito Takita   ⁵ , Dr med ;   Tetsuya Tanimoto   ⁵ , Dr med ;   Masahiro Kami   ⁶ , Prof Dr med

¹ School of Engineering, The University of Tokyo, Tokyo, Japan

² School of Engineering, Mie University, Tsu, Japan

³ RCAST, The University of Tokyo, Tokyo, Japan

⁴ Trust Architecture, Inc, Tokyo, Japan

⁵ Navitas Clinic, Tokyo, Japan

⁶ Medical Governance Research Institute, Tokyo, Japan