On Ordinal Utility, Cardinal Utility and Random Utility
On Ordinal Utility, Cardinal Utility and Random Utility
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论序数效用、基数效用和随机效用
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
R. Batley
中科院分区：
文献类型：
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作者：
R. Batley
虽然随机效用模型（RUM）完全是从序数效用的角度来构思的，但它被广泛实践的设备表现出基数效用的性质。采用基数效用作为序数的工作操作是完全有效的，只要从该操作得出的解释仍然忠实于序数效用。文章认为，后者的要求是否适用于几个测量通常来自RUM。特别是它被发现，消费者剩余变化的测量可能会偏离序数效用，并利用基数固有的实际设备。
Though the Random Utility Model (RUM) was conceived entirely in terms of ordinal utility, the apparatus through which it is widely practised exhibits properties of cardinal utility. The adoption of cardinal utility as a working operation of ordinal is perfectly valid, provided interpretations drawn from that operation remain faithful to ordinal utility. The article considers whether the latter requirement holds true for several measurements commonly derived from RUM. In particular it is found that measurements of consumer surplus change may depart from ordinal utility, and exploit the cardinality inherent in the practical apparatus.