Modeling Spatio-temporal Network Computations: A Summary of Results

Spatio-temporal network is defined by a set of nodes, and a set of edges, where the properties of nodes and edges may vary over time. Such networks are encountered in a variety of domains ranging from transportation science to sensor data analysis. Given a spatio-temporal network, the aim is to develop a model that is simple, expressive and storage efficient. The model must also provide support for the design of algorithms to process frequent queries that need to be answered in the application domains. This problem is challenging due to potentially conflicting requirements of model simplicity and support for efficient algorithms. Time expanded networks which have been used to model dynamic networks employ replication of the network across time instants, resulting in high storage overhead and algorithms that are computationally expensive. This model is generally used to represent time-dependent flow networks and tends to be application-specific in nature. In contrast, the proposed t...

• Type: Conference
• Year: 2007
• Where: GEOS
• Authors: Betsy George, Shashi Shekhar
• Keywords: GEOS 2007, Information Management, Model, Spatio-temporal Networks, Time Expanded Networks