Welfare, freedom of choice and composite utility in the logit model
Welfare, freedom of choice and composite utility in the logit model
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Logit 模型中的福利、选择自由和综合效用
DOI：
10.1007/s00355-004-0313-7
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发表时间：
2005
影响因子：
0.9
通讯作者：
S. Erlander
中科院分区：
文献类型：
--
作者：
S. Erlander
离散选择模型通过效用/属性来描述选择集中的备选项。决策过程用选择集上的概率分布来描述。本文针对简单的单参数logit模型，提出一种基于期望收益和期望选择自由的福利测度。在这种情况下，福利措施就是所谓的复合效用。这意味着组合效用可以被解释为预期收益和预期选择自由的综合收益。所提出的福利测度可以推广到参数线性logit模型和嵌套logit模型等。提议的福利措施是根据选择概率分布来制定的。它取决于概率的形式，而不取决于分布的任何特定推导。
Discrete choice models characterize the alternatives in the choice set by utilities/attributes. The decision making is described by a probability distribution over the choice set. In this paper we introduce a welfare measure based on expected payoff and expected freedom of choice for the simple one parameter logit model. In this case the welfare measure turns out to be the so called composite utility. This means that the composite utility can be interpreted as the combined benefit of expected payoff and expected freedom of choice. The proposed welfare measure can be extended to the linear-in-parameters logit model and nested logit models and others. The proposed welfare measure is formulated in terms of the choice probability distribution. It depends on the form of the probabilities, but not on any particular derivation of the distribution.