剩余提取物的不确定度和耐用性
Uncertainty and Robustness of Surplus Extraction
摘要：
本文研究了经典盈余提取问题的一个鲁棒版本，其中设计者只知道每种类型的信念属于某个集合，并设计适合于该集合中所有可能信念的机制。我们推导出在这种情况下完全提取的充分必要条件，并表明这些是Cremer和McLean（1985，1988）确定的经典凸独立条件的自然集值类似物。我们表明，全面提取既不是一般可能的，也不是一般不可能的，在标准设置中，全面提取是通用的。当完全提取失败时，我们表明，自然附加条件可以限制设计师可以提供的合同的性质和设计师可以获得的盈余。
英文摘要：
This paper studies a robust version of the classic surplus extraction problem, in which the designer knows only that the beliefs of each type belong to some set, and designs mechanisms that are suitable for all possible beliefs in that set. We derive necessary and sufficient conditions for full extraction in this setting, and show that these are natural set-valued analogues of the classic convex independence condition identified by Cremer and McLean (1985, 1988). We show that full extraction is neither generically possible nor generically impossible, in contrast to the standard setting in which full extraction is generic. When full extraction fails, we show that natural additional conditions can restrict both the nature of the contracts a designer can offer and the surplus the designer can obtain.
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