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公共品供给低效率问题是长期困扰理论和实践的难题。本文应用博弈论分析加总技术对公共品供给效率的影响,用公共品博弈的纳什均衡代表供给量理论预测值,并对预测值与最优值的效率进行比较。分析得出公共品供给效率的高低和个人对公共品贡献量的选择,都随着加总技术类型的不同而变化;当达到公共品供给最优值时,每个人对公共品的贡献量不一定相同,因此,是否“搭便车”并非公共品供给低效的判断标准,“搭便车”有时是高效的。
The inefficiency of public goods supply is a long-term problem that plagues theory and practice. In this paper, the game theory is used to analyze the effect of aggregation technique on the efficiency of public goods supply. The Nash equilibrium of public goods game is used to represent the theoretical predictive value of supply and the efficiency of forecasting value and optimal value is compared. The analysis shows that the efficiency of public goods supply and the individual’s contribution to public goods are all changed with the increase of the total types of technology. When the optimal value of public goods supply is reached, each person’s contribution to public goods is not Must be the same, therefore, whether “free riding ” is not a criterion for the ineffectiveness of public goods supply, “free rider ” is sometimes efficient.