An integrated spatio-temporal GIS toolkit for exploring intra-household interactions |
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Authors: | Hejun Kang Darren M Scott |
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Institution: | (1) Center for Spatial Analysis, School of Geography and Earth Sciences, McMaster University, Hamilton, ON, Canada, L8S 4K1 |
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Abstract: | This paper reports on the development of an integrated spatio-temporal GIS toolkit that facilitates the exploration of intra-household
interactions. Two tools comprise the toolkit. The first tool, Space-Time Coincidence Analyst, identifies joint activity/travel episodes undertaken by household members. The core of this tool is a set of flexible criteria
for classifying episodes as either joint or independent. The second tool, Space-Time Path Visualizer, not only displays space-time paths for household members, but also shows joint episodes undertaken by any two household
members together. The toolkit can be applied to any household-based, activity/travel data set so long as required information
is specified by the user. To demonstrate its usefulness for research, the toolkit is applied to the TAPS (Toronto Activity
Panel Survey) 2002–03 data set. The results suggest that considerable variation exists in the number of joint activity/travel
episodes identified using different classification criteria. Specifically, when using restrictive criteria (i.e., same timing,
specific activity type/travel mode), only 2,265 joint activity/travel episodes are identified compared to 8,791 when using
more flexible criteria. In turn, our results show that certain key attributes for independent and joint activity/travel episodes
(i.e., frequency per household, starting time, ending time and duration) also vary under the different classification criteria.
Hejun Kang
is a PhD candidate in the School of Geography and Earth Sciences at McMaster University. She holds a MSc degree in Geographic
Information Science from the University of Calgary. Her doctoral research concerns intra-household interactions in the context
of activity/travel behavior.
Darren M. Scott
is an Associate Professor of Geography at McMaster University. His current research centers on inter-agent decision making
with regards to activity/travel behavior, and on issues concerning aggregation in activity-based travel demand models, most
notably the treatment of space and the classification of activities. |
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Keywords: | 3D Activity analysis Geovisualization GIS Intra-household interaction Joint activity Space-time path Spatio-temporal GIS Travel behavior |
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