Fig. 1

Visual comparison on how a data source of interactions between four children in a playground is represented via b static graph, c temporal graph, and d Spatio-temporal graph. While Child-A and Child-B have different temporal patterns (e.g., frequency of interactions and difference in time between interactions) and spatial features (e.g., location of interactions) in the a data source, their position in the b static graph is the same. The c temporal graph could better preserve temporal details, but the spatial information is ignored. And finally, the d spatio-temporal representation could preserve the temporal and spatial information of interactions