Performance evaluation framework of highway PPP project based on stakeholders' perspectives and linguistic environment

Abstract

Most of performance evaluation index systems of highway PPP project just reflected government's strategic goal, did not public's and social capital's. Meanwhile, a large number of criteria increase the uncertainty. Uncertainty mainly exists in two aspects: (1) qualitative performance evaluation value; (2) interval weight of evaluation criterion. So this paper proposed the evaluation index system of highway PPP project from the perspectives of stakeholders, which can reflect the performance level of highway PPP project on the strategic goals of government, public and social capital. In order to deal with the uncertainty problems, the paper proposed a corresponding evaluation model which used the linguistic terms and the trapezoidal interval type-2 hesitant fuzzy number to express the qualitative performance evaluation value and used the maximising deviations principle to handle the interval weights. Finally, a case of China is studied demonstrates the effectiveness of performance evaluation framework.