Evaluation of analytic hierarchy process (AHP) vs analytic network process (ANP) as decision tools in projects
By: Khedkar, Pratik T
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Contributor(s): Subramanyan, Hariharan.
Publisher: Pune NICMAR 2015Edition: Vol.30(1), Jan-Mar.Description: 31-44p.Subject(s): Construction Engineering and Management (CEM)Online resources: Click here
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NICMAR Journal of construction managementSummary: Analytic Hierarchy Process (AHP) and Analytic Network Process (ANP)methods use pair wise comparisons among factors or criteria in order to achieve the objective of selection of the best alternative. ANP technique is a generalized form of AHP that allows interdependencies, outer dependencies and feedbacks among decision elements in the hierarchical or non-hierarchical structures. Both processes are used as multi-criteria decision making tools in evaluating closely competing alternatives. The present paper discusses a case of contractor selection which involves selection of the best contractor from five alternatives under six criteria of selection. While the results of AHP analysis are mapped with the results of Expert choice, the results of ANP are mapped with Super Decision software. The results of AHP are compared with ANP and then they are presented. Analysis results suggest that AHP could lead to selection of alternatives based on the weight of the criteria and it is likely that the results can be more aligned towards criteria that have higher weights and can overlook poor performance on some of the other criteria. In order to avoid such biases, it is suggested that ANP shall be performed on these alternatives to complement the results of AHP before a final decision is made. The paper does not undermine the strength of AHP but only attempts to demonstrate that a combined evaluation of AHP and ANP can take care of biases and hence can contribute to better decision making process. Case scenario evaluation demonstrates that a comparative evaluation of alternatives using AHP method when coupled with ANP analysis can complement the results and can reveal a clear scenario in a decision analysis process.
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Analytic Hierarchy Process (AHP) and Analytic Network Process (ANP)methods use pair wise comparisons among factors or criteria in order to achieve the objective of selection of the best alternative. ANP technique is a generalized form of AHP that allows interdependencies, outer dependencies and feedbacks among decision elements in the hierarchical or non-hierarchical structures. Both processes are used as multi-criteria decision making tools in evaluating closely competing alternatives. The present paper discusses a case of contractor selection which involves selection of the best contractor from five alternatives under six criteria of selection. While the results of AHP analysis are mapped with the results of Expert choice, the results of ANP are mapped with Super Decision software. The results of AHP are compared with ANP and then they are presented. Analysis results suggest that AHP could lead to selection of alternatives based on the weight of the criteria and it is likely that the results can be more aligned towards criteria that have higher weights and can overlook poor performance on some of the other criteria. In order to avoid such biases, it is suggested that ANP shall be performed on these alternatives to complement the results of AHP before a final decision is made. The paper does not undermine the strength of AHP but only attempts to demonstrate that a combined evaluation of AHP and ANP can take care of biases and hence can contribute to better decision making process. Case scenario evaluation demonstrates that a comparative evaluation of alternatives using AHP method when coupled with ANP analysis can complement the results and can reveal a clear scenario in a decision analysis process.
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