PPP项目中投资者协同行为发生机制及其演化规律研究

在公私合作项目(PPP)项目中,政府和私人投资者可能会采取协同行为来追求自身利益。这就需要对政府和私人投资者的协同行为进行研究,以了解提高项目绩效的基础机制。首先,基于演化博弈模型分析项目投资者策略选择的动态演化过程,据此政府和私人投资者通过交互选择来实现各自的最优策略。其次,通过演化博弈模型分析发现,政府和私人投资者协作管理具有多重复杂路径演化,其稳定策略很大程度上取决于组织的初始状态及相互激励关系。然后,探讨不同情境下投资者的最优策略和有效增强投资者协同行为的利益协调机制。

Occurrence Mechanism and Evolution Law of Investors' Collaborative Behavior in PPP Projects

In public-private partnership(PPP)projects, the government and private investors may engage in collaborative behavior to pursue interest. This makes necessary the study of government and private investors' collaborative behavior in order to gain the understanding of the underlying mechanisms towards enhancing project performance. At first, the dynamic evolutionary procedure of project investors'choice of strategies is analyzed based on an evolutionary game model, in which the government and private investors could nearly choose interactions as their optimal strategy. Secondly, from the perspective of evolutionary game model(EGT), the results show that the evolution of the government and private investors' collaborative behavior has multiple equilibrium in payoff matrix, and the evolutionary stable strategies(ESS)are largely influenced by the initial organization states and mutual incentive situations of both the regulatory system. Furthermore, the equilibrium solution of the game is discussed to find an effective way to strengthen collaborative behavior which would improve the mechanism of benefit coordination by investors under different situations.