Thinking about Space‐Time Connections: Spatiotemporal Scheduling of Individual Activities. Issue 6 (17th May 2013)

• Record Type: Journal Article
• Authors: Stewart, Kathleen; Fan, Junchuan; White, Emily
• Is Part Of: Transactions in GIS. Volume 17:Issue 6(2013:Dec.)
• Page Start: 791
• Page End: 807
• Publication Date: 2013-05-17
• Subjects: Geographic information systems -- Periodicals; 910.285
• DOI: 10.1111/tgis.12028
• Languages: English
• ISSNs: 1361-1682

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>This article presents a spatiotemporal model for scheduling applications that is driven by the events and activities individuals plan and manage every day. The framework is presented using an ontological approach where ontologies at different levels of generalization, e.g. domain, application, and task ontologies, are linked together through participation and inheritance relationships. <italic>S_Events</italic> are entered into a schedule as a new <italic>S_Entry</italic>, or modifications can be made to existing entries including <italic>reschedule</italic>, <italic>postpone</italic>, <italic>change location</italic>, and <italic>delete</italic> as schedules vary over time. These schedule updates are formalized through changes to planned start and end times and the planned locations of S_Entries are expressed using SWRL, a semantic web rule language. SWRL is also used for reasoning about schedule changes and the space‐time conflicts that can occur. The sequence of entries in a schedule gives rise to <italic>S_trajectories</italic> representing the locations that individuals plan to visit in order to carry out their schedule, adding an additional spatial element to the framework. A prototype <italic>Geoscheduler</italic> application maps S_Entries against a timeline, offering a spatiotemporal visualization of scheduled activities showing the evolution of a schedule over space‐time and affecting spatiotemporal accessibility for individuals.</p> </abstract>