经济学将市场参加者的风险偏好分为三类：风险厌恶、风险爱好和风险中性。一般认为，冯·诺依曼－摩根斯坦效用函数首先向人们提供了有关分配过程中个人偏好的基本表达形式。
本文根据不确定性条件下的信息经济分析原理，建立了基于风险效用函数的收费道路使用者支付意愿模型。
This paper establishes a user's willing-to-pay model for pricing road based on risk utility function, which is an application of information economics analysis and risk decision theory.
在此基础上，根据递减绝对风险规避者的效用函数集合的特征，分析并证明其决策准则，给出定理4、定理5。
According to characteristics of the decreasing absolute risk averter's utility functions, the paper analyzes and proves its decision rules, gives the theorem 4 and theorem 5.
基于双方的效用函数，以消除医院道德风险和自选择为目的，运用博弈理论推出了最优付费方式的博弈均衡解。
On the basis of the two sides utility function a first best payment system has been provided to eliminate moral hazard and self-selection from hospital by game theory.
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