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Fall 2003
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A Quick Review of the Model

Choice behavior can be viewed as probabilistic. As a result, it is unlikely that any given alternative will be selected exclusively unless no other alternatives exist. This proposition can be expressed symbolically as follows:


where Pij is the probability that an individual i will select alternative j given the utility of j relative to the sum of the utilities of all other choices of which there are n considered by individual i. A more detailed explanation of Dr. Huff's work and the enhanced capabilities of the model can be found in the October–December 2003 ArcUser magazine ("Parameter Estimation in the Huff Model" [PDF-1.4 MB]).

See also "Dr. David L. Huff Joins Esri as Technical Advisor."

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