A conceptual view on trajectories
Data & Knowledge Engineering
A critical evaluation of location based services and their potential
Journal of Location Based Services
Time geography rediscovered: a common language for location-oriented services
Proceedings of the 2nd International Workshop on Location and the Web
Robust traffic merging strategies for sensor-enabled cars using time geography
Proceedings of the 17th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems
Historic queries in geosensor networks
W2GIS'07 Proceedings of the 7th international conference on Web and wireless geographical information systems
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Ad-hoc shared-ride trip planning is a planning task on a non-deterministic transportation network. We propose to solve this task in a mobile geosensor network, which consists of transportation clients and hosts. In a mobile geosensor network the communication costs are a critical factor. Trip planning agents need communication to collect knowledge about the current network, and any way to limit this need reduces the costs of a solution. This paper introduces a theoretical model based on time geography, where clients, as trip planning agents, can actively identify relevant transportation hosts before communication starts, and hosts can identify whether their route is relevant for a specific planning task before responding to any request. This model reduces the communication costs significantly, which is at first derived theoretically, and then confirmed by an example.