Title
Choice set formation with multiple flexible activities under space–time constraints
Abstract
In classical time geography, an individual travel path is composed of a chain of visits, with each visit being a flexible activity between two fixed activities at two known stations. In reality, individuals tend to carry out trips with much variation and complexity, with multipurpose trips being a prominent and pervasive phenomenon. There is limited research to date on multipurpose trips in time-geographic analysis by geographic information system GIS scientists, or more specifically, multiple flexible activities between two fixed stations. To fill this gap, this article proposes four models for identifying the choice set with multiple flexible activities under space–time constraints. The models are derived through set-theoretic formalism based on the concept of trip chaining. The structure of the four models establishes a theoretical framework for conceptualizing trip-chaining behaviour with respect to the fixity of activities and the number of fixed stations as destinations or origins. They provide fundamental and rigorous apparatus for studying complex individual activity–travel patterns in many applied contexts when multipurpose trips are involved. This article also describes implementation of the models with a real transportation network as a way of validation.
Year
DOI
Venue
2012
10.1080/13658816.2011.624520
International Journal of Geographical Information Science
Keywords
Field
DocType
individual travel path,multipurpose trip,travel pattern,choice set formation,flexible activity,complex individual activity,multiple flexible activity,classical time geography,time constraint,fixed activity,fixed station,space time,geographic information system,choice set
Geographic information system,Choice set,Computer science,Artificial intelligence,Flow network,Chaining,Simulation,Operations research,Time geography,Formalism (philosophy),TRIPS architecture,Machine learning,Destinations
Journal
Volume
Issue
ISSN
26
5
1365-8816
Citations 
PageRank 
References 
8
0.70
11
Authors
2
Name
Order
Citations
PageRank
Xiang Chen117813.62
Mei-Po Kwan233645.13