Digital Model of Road and Bridge Construction Enterprise Purchasing and Its Applied Research

摘要

Combining the TOPSIS method and AHP method, established comparison matrix which reflected the importance between the factors in the indicator system. After gotten the weight coefficient vector, compared the calculated TOPSIS standardized decision matrix, and then defined the best supplier and the worst supplier. Calculated the Euclidean distance between each supplier with the best supplier and the worst supplier to get the supplier' closeness to the best supplier, and then determined ranking of the alternatives. The last case study verified the reliability and the feasibility of the model.