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不完全信息下纯交换帕累托最优的实现研究
引用本文:徐德云.不完全信息下纯交换帕累托最优的实现研究[J].统计与信息论坛,2008,23(6):15-21.
作者姓名:徐德云
作者单位:安徽财经大学,国际经济贸易学院,安徽,蚌埠,233041
摘    要:现有的理论中,纯交换帕累托最优状况不是唯一的,且认为只要进行交换就必然能实现帕累托最优。其原因是纯交换帕累托最优条件不充分和交换原则存有缺陷。根据交换是一个讨价还价的过程,采用博弈分析方法,在不完全信息条件下,只要遵循理性人交换原则,交换必能实现,但不一定是帕累托最优。如果信息不对称方所判断的效用函数没有改变对方真实效用函数的偏好性质,交换必然能达到唯一的帕累托最优状况,但利益分割不公平,存在交换剥削;如果效用函数的偏好性质改变,帕累托最优不能实现,而是帕累托改进,但其消费状态也是唯一的。

关 键 词:理性人交换  交换利益  纯交换的帕累托最优
文章编号:1007-3116(2008)06-0015-07
修稿时间:2008年3月4日

A Study on the Realization of the Pure Pareto Optimal Criterion Exchange under the State of Information Insufficiency
XU De-yun.A Study on the Realization of the Pure Pareto Optimal Criterion Exchange under the State of Information Insufficiency[J].Statistics & Information Tribune,2008,23(6):15-21.
Authors:XU De-yun
Institution:XU De-yun (School of International Economics and Trade, Anhui University of Finance and Economics, Bengbu 233041, China)
Abstract:In current theory, the pure Pareto Optimal exchange condition is not exclusive. Moreover, the current theory states that the Pareto Optimal can only be realized if the exchanges are in progress. The reasons for this are because the exchange conditions are inadequate in terms of the pure Pareto Optimal Criterion of exchange and limitation of exchange principles. Exchange is a process of bargaining, and so is in a state of information insufficiency and therefore is subject to game theory. Under the state of information insufficiency, only when the rational person exchange principle is abided by, can the exchange be realized, but it isn't certain that the state is the Pareto Optimal. When there is not enough information and the technical nature of the utility function is not changed, the exchange is sure to reach the state of Pareto Optimal. However, there still exists an unfair division of profits and the exploitation of exchange. If the preferred nature of the utility function is changed, the Pareto Optimal can not be realized. The Pareto Optimal is likely to be realized on condition that it is perfected. But this state of consumption is unique.
Keywords:rational person exchange  exchange benefit  the pure Pareto Optimal Criterion exchange
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