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A Generalizable Formulation of Conditional Logit With Diagnostics

Ehsan S. Soofi
Journal of the American Statistical Association
Vol. 87, No. 419 (Sep., 1992), pp. 812-816
DOI: 10.2307/2290219
Stable URL: http://www.jstor.org/stable/2290219
Page Count: 5
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A Generalizable Formulation of Conditional Logit With Diagnostics
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Abstract

The conditional logit model is a multinomial logit model that permits the inclusion of choice-specific attributes. This article shows that the conditional logit model will maximize entropy given a set of attribute-value preserving constraints. A correspondence between the maximum entropy (ME) and maximum likelihood (ML) estimates for logit probabilities is established. Some easily computable and useful diagnostics for logit analysis are provided, and it is shown that an evaluation of the relative importance of attributes can be made using the ME formulation. The ME formulation is also generalized to accommodate initial choice probabilities into the logit model. An example is given.

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