Data interpretation apparatus, method, and program, data integration apparatus, method, and program, and digital city establishing system

A data interpretation apparatus including a platform configured to automatically execute type conversion of an object. The platform is provided in a control unit of the data interpretation apparatus, and includes an obtaining unit and an interpretation unit. The obtaining unit obtains input data as the object of the platform. The interpretation unit generates an initial graph with respect to the object, and performs interpretation by automatically growing a graph from the initial graph while executing, as necessary, the type conversion of the object associated with each node of the graph toward extension or toward intension.