Before revision:  Thus, in this study, based on big human mobility data and city POI data, we design an interactive visual analytics system called EpiMob (Epidemic Mobility) to intuitively demonstrate and simulate how the human mobility, as well as the number of infected people , will change according to a certain restriction policy or a combination of policies . EpiMob is made up of a set of coupled modules: a data processing module for data cleansing, interpolation, and indexing;
After revision:  Thus, in this study, based on big human mobility data and city POI data, we design an interactive visual analytics system called EpiMob (Epidemic Mobility) . The system interactively simulates the changes in human mobility and the number of infected people , will change according to a certain restriction policy or a combination of policies . EpiMob is made up of a set of coupled modules: a data processing module for data cleansing, interpolation, and indexing;