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  • Online Resource  (2)
  • Ferreira, Joseph  (2)
  • Mobility and traffic research  (2)
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  • Online Resource  (2)
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  • Mobility and traffic research  (2)
  • 1
    Online Resource
    Online Resource
    Synthetic Population Generation at Disaggregated Spatial Scales for Land Use and Transportation Microsimulation
    SAGE Publications ; 2014
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 2429, No. 1 ( 2014-01), p. 168-177
    Details
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 2429, No. 1 ( 2014-01), p. 168-177
    Abstract: The execution of agent-based microsimulation requires an initial set of agents with detailed socioeconomic and demographic attributes to support subsequent behavioral and market models. Data limitations and privacy reasons often restrict the scope and detail with which a synthetic population can be generated by the traditional population synthesis approach. For the accommodation of the growing requirement of microsimulation on spatial resolution and variety, considering new data sources that overcome the data limitations and support population synthesis at more disaggregated levels is necessary. This paper presents a two-stage population synthesis approach not only to improve the accuracy of population generation with imperfect microdata and marginal data, but also to use additional data sets when the spatial details of the synthetic population are interpolated. A general iterative proportional fitting (IPF) method is used in the first stage to estimate the joint distribution of household and individual characteristics under multiple levels of constraints. Additional building information is collected from multiple sources and used to estimate spatial patterns of housing and household characteristics that are then preserved through a second IPF procedure. Preliminary tests of the proposed two-stage IPF-based approach with Singapore data show that the method yields better fitted population realizations at more fine-grained levels than do traditional one-step population synthesis methods.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    URL: Article
    DOI: 10.3141/2429-18
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2014
    detail.hit.zdb_id: 2403378-9
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Information Infrastructure for Research Collaboration in Land Use, Transportation, and Environmental Planning
    SAGE Publications ; 2010
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 2183, No. 1 ( 2010-01), p. 85-93
    Details
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 2183, No. 1 ( 2010-01), p. 85-93
    Abstract: This paper presents the framework and implementation of a flexible, loosely coupled information infrastructure to facilitate collaborative research on land use, transportation, and environment (LUTE) modeling. The framework combines off-the-shelf open source applications such as Apache, PostgreSQL, MapServer, OpenSSL, and MediaWiki, with proprietary tools such as ArcGIS Server and Flex, and uses minimal custom code to provide web services for distributed modeling and realistic evolution of data, models, and research. The approach has been developed to assist research collaboration for the transportation systems focus areas of the Massachusetts Institute of Technology–Portugal program, but it can be appropriate for other collaborative efforts that could benefit from federated systems for LUTE modeling across local and regional agencies and university partners.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    URL: Article
    DOI: 10.3141/2183-10
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2010
    detail.hit.zdb_id: 2403378-9
    Location Call Number Limitation Availability
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    Online Resource
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