GIS–Multicriteria Evaluation with Ordered Weighted Averaging (OWA): Case Study of Developing Watershed Management Strategies

Jacek Malczewski, Terry Chapman, Cindy Flegel, Dan Walters, Dan Shrubsole and Martin A Healy
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Jacek Malczewski: Department of Geography, University of Western Ontario, London, Ontario N6A 5C2, Canada
Martin A Healy: Urban and Regional Planning Technology, Fanshawe College, 1460 Oxford Street, London, Ontario N5Y 5R6, Canada

Environment and Planning A, 2003, vol. 35, issue 10, 1769-1784

Abstract: This paper focuses on the parameterized-ordered weighted averaging (OWA) method. OWA is a family of multicriteria evaluation (or combination) rules. The proposed approach uses a parameter that serves as a mechanism for guiding multicriteria evaluation procedures. The parameter is incorporated into a method for obtaining the optimal order weights and for developing a transformation function. The function provides us with a consistent way of modifying the criterion values so that the multicriteria combination procedures can be guided by specifying a single parameter. The parameterized-OWA method has been implemented in a GIS environment as a GIS–OWA module and it has been tested in a real-world situation for developing management strategies in the Cedar Creek watershed in Ontario, Canada. Given a set of evaluation criteria, the problem is to evaluate areas in the watershed for rehabilitation and enhancement projects. Using the GIS–OWA method, a number of alternative strategies for rehabilitation and enhancement projects have been generated and evaluated.

Date: 2003
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Persistent link: https://EconPapers.repec.org/RePEc:sae:envira:v:35:y:2003:i:10:p:1769-1784

DOI: 10.1068/a35156

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