Addressing the contractor selection problem using an evidential reasoning approach

M. SÖNMEZ, J.B. YANG, G.D. HOLT
2001 Engineering Construction and Architectural Management  
Selecting the'best' main contractor is a complex decision process for construction clients. It requires a large number of criteria to be simultaneously measured and evaluated. Many of these criteria are related to one another in a complex way and therefore, they very often con¯ict insofar as improvement in one often results in decline of another(s). Furthermore, as contractors' attributes are expressed in both quantitative and qualitative terms, decision-makers have to base their judgements on
more » ... oth quantitative data and experiential subjective assessments. In this paper, the evidential reasoning (ER) approach (which is capable of processing both quantitative and qualitative measures) is applied as a means of solving the contractor selection problem (CSP). The process of building a multiple criteria decision model of a hierarchical structure is presented, in which both quantitative and qualitative information is represented in a uni®ed manner. The CSP is then fully investigated using the ER approach. Both the advantages of applying this model in practice and the analysis process itself are discussed.
doi:10.1108/eb021182 fatcat:pxzhzabmnnhnjf7kqaeib2bshu