SEARCH MODELS AND CHOICE SET GENERATION

This paper was prepared for presentation at an international conference on research and applications of disaggregate travel demand models to be held at Leeds University, England, in July 1980. Most models of individual choice behaviour in the areas of transport and urban planning have implicitly assumed that all individuals in the population consider all available alternatives before making a final optimal choice. It has been argued, however, that this assumption is not necessarily correct. In the light of this argument, this paper describes the role and significance of the generation of choice sets as an integral part of choice modelling. It reviews alternative approaches to the choice set problem whereby the inclusion of choice set generation in the overall choice may be seen either as a pre-choice or a post-choice process. Under the heading of a post-choice process, it then discusses work from various disciplines which consider choice set generation as arising from a search process. It then proceeds to examine choice set generation as a direct result of the cessation of a search of available alternatives. A simulation program is then outlined and results presented which describe the outcome of a search as a function of various attributes of the search process. The implications of the non-randomness of search patterns are then discussed in the context of spatial choice problems (A). (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14454467
• Corporate Authors:

  Monash University

  Wellington Road
  Clayton, Victoria  Australia  3800
• Authors:
  • Richardson, A J
• Publication Date: 1980-5

Media Info

• Features: Figures; References; Tables;
• Pagination: 39 p.
• Serial:
  • Publication of: Monash University, Australia
  • Publisher: Monash University
  • ISSN: 1445-4467

Subject/Index Terms

• TRT Terms: Choice models; Decision making; Disaggregate analysis; Forecasting; Mathematical models; Simulation; Transportation modes; Transportation planning; Travel demand; Urban transportation
• Uncontrolled Terms: Selection
• Old TRIS Terms: Disaggregate models
• ITRD Terms: 2248: Decision process; 6473: Mathematical model; 9072: Selection; 1145: Transport mode
• Subject Areas: Highways; Planning and Forecasting; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00325318
• Record Type: Publication
• Source Agency: ARRB
• Report/Paper Numbers: Working Paper 80/12 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: May 21 1981 12:00AM