Research on Moving Objects with Multimodal Transportation Modes

In spite of massive research having been conducted on moving objects databases, existing methods can not manage moving objects with transportation modes and covering multiple environments, e.g., Walk → Car → Indoor. The current techniques target a single environment, for example road network. But humans’ movement can include several environments like roads, pavement areas, buildings, which imposes new challenges regarding representation and management of these mobile data and efficient query processing in a database system. In this paper, we first present a data model for representing generic moving objects in multiple environments. The method is to let the space where moving objects are located consist of a set of called infrastructure objects like streets, pavements, moving buses, and then the location of a moving object is represented by referencing to these infrastructure objects. In the meantime, transportation modes are seamlessly integrated. Second, to evaluate the performance of a database system, a benchmark comprising of a scalable dataset and a set of queries is required. We propose a method to create all infrastructure objects as well as generic moving objects due to the major challenge of getting the real data. A list of queries is given which will be used for the evaluation.