Journal
JOURNAL OF BUSINESS ECONOMICS AND MANAGEMENT
Volume 11, Issue 1, Pages 34-55Publisher
VILNIUS GEDIMINAS TECH UNIV
DOI: 10.3846/jbem.2010.03
Keywords
contractors; construction; multicriteria; decision-making; grey numbers; SAW; SAW-G; TOPSIS; TOPSIS grey
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The accuracy of performance measures in common multicriteria methods is usually assumed to be accurate. Grey theory is a new technique for performing prediction, relational analysis and decision-making in many areas. This paper presents applicability of grey theory techniques for defining the utility of an alternative. Proposed assessment model covers well known method of TOPSIS (Technique for Order Preference by Similarity to Ideal Solution), method with attributes values determined at intervals (TOPSIS-grey) and a new method of Simple Additive Weighting with Grey relations (SAW-G). A case study of the assessment of contractors' competitive ability was used to demonstrate the applicability and the effectiveness of the proposed approach. The results show that the methods of grey relations methodology can be implemented as an effective decision aid for tasks with uncertain data.
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