基础设施项目普遍具有较长的投资回收期,长期来看其产品(服务)价格一般趋于稳定值。考虑前人在研究政府担保价值过程中,其假设项目收入服从几何布朗运动存在的不足,为此,引入均值回归过程,并将政府担保单执行期价值衡量扩展至多执行期,构建了最低收入政府担保多执行期价值模型。采用动态规划方法讨论了均值回归过程对政府担保价值的影响,给出多执行期存在最大执行次数限制的政府担保价值测算案例,为政府科学估算政府担保价值提供依据。
Infrastructure projects often have long payback period. In the long run, the price of projects's product or service is tend to stable. Basing on lots of scholars ignore the price process, this paper introduces Ornstein-Uhlenbeck (O-U) process for option pricing theory, and constructs multi-period min-income govemment guarantee value model. By Dynamic-Programming (D-P) method, this paper debates that the O-U Process factors and the constraint of executive times have significant impact on government guarantee value, and provides an effective way to calculate the government guarantee value.