Geospatial Framework for Dynamic Route Planning Using Congestion Prediction in Transportation Systems

摘要

The goal this research is to develop an end-to-end data-driven system, dubbed TransDec (short for Transportation Decision-Making), to enable decision-making queries in transportation systems with dynamic, real-time and historical data. With TransDec, we particularly address the challenges in visualization, monitoring, querying and analysis of dynamic and large-scale spatiotemporal transportation data. TransDec fuses a variety of transportation related real-world spatiotemporal datasets including massive traffic sensor data, trajectory data, transportation network data, and points-of-interest data to create an immersive and realistic virtual model of a transportation system. Atop such a system, TransDec allows for processing a wide range of customized spatiotemporal queries efficiently and interactively. The successful implementation of the TransDec infrastructure in the previous stages of the project has facilitated the infrastructure and knowledgebase for two fundamental research lines. The first aims at devising an algorithm for compact and efficient data representation. Compact suggests that the data stored requires as little storage space as possible. The compactness of the data becomes a critical issue as the amount of data stored increases. Efficient representation means that, query times of the data are minimal and allow to work with the system in an interactive fashion. Then, exploiting the results of these lines of research, a new paradigm is presented. In this new storage paradigm the single point of storage, thus the single database server is traded for a cloud computing. This has many advantages, both in terms of storage scalability and maintenance and in terms of the availability of the data to all users as soon as it stored. We expect this new paradigm to dominate the research in geospatiotemporal databases in the near future and believe that the seeds we present within this research will play a significant role in it.