Research on decision-making method of bid evaluation for engineering projects based on fuzzy DEA and grey relation

Abstract

At present, bid evaluation in China mainly adopts the method of traditional comprehensive scoring. And the method of analytic hierarchy process or fuzzy synthetic assessment is also in common use. However, those methods have their own weaknesses, e.g., having a strong subjectivity, lacking in analysis of quantitative indicators, and being unable to reflect the defects of the bidders and reasons for ineffectiveness, etc. This paper integrated fuzzy theory, data envelopment analysis (DEA) and grey relational analysis and proposed a systematic decision-making method of bid evaluation based on fuzzy DEA and grey relation for choosing proper bidders. For qualitative indicators, the method took matrix of optimal objective function values as matrix of qualitative indicator values by constructing C2R model on basis of membership matrix; for quantitative indicators, the method took matrix of correlative coefficients as matrix of quantitative indicator values by using the grey system theory. At last, this paper introduced a case study to confirm the rationality and feasibility of the decision-making method of bid evaluation, being valuable and helpful for assessment applications in other areas.