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Space-time opportunities for multiple agents: a constraint-based approach

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Constraint-based models and models constructing accessibility measures mainly focus on single agents having only one available transport mode. However, numerous cases exist where multiple agents or groups of individuals with different available transport modes want to participate in a joint activity at a certain location. The aim of this paper is to provide new insights into representing and reasoning about feasible space-time opportunities for multiple agents. Relying on concepts of time geography, we propose a conceptual framework in order to determine interaction spaces for groups of individuals. Besides availability of means of transport and the locations of each individual, minimum activity duration and opening hours of opportunities are taken into account. The reasoning about space and time is visualized in three dimensions using a hybrid (CAD/GIS) system.

Keywords: CAD/GIS; Interaction spaces; Space-time accessibility; Time geography

Document Type: Research Article


Affiliations: Ghent University, Geography Department, Krijgslaan 281, S8, B-9000 Gent, Belgium

Publication date: 2007-01-01

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