Abstract
This paper considers alternative approaches to an analysis for the interregional commodity flows. One is based upon the traditional methods, which includes a gravity model, and/or a linear programming model. The other is an information theoretic approach, which is simply called an “entropy model.” An entropy model can be classified into the following three categories. The first one is the Wilson-type model. The second one is the method which uses a channel capacity. The last one makes use of an information inaccuracy. From a methodological point of view, the features of each method are clarified and a comparison for efficacy is made out theoretically.
