Abstract
The purpose of this paper is to propose an extension model of the existing group analytic hierarchy process (AHP) model. In the existing AHP method, we need to obtain complete paired comparisons of criteria and alternatives. In practical applications, however, each evaluator carries out different paired comparison and incomplete paired comparisons are obtained. The proposed model can be applied to the situation where we get incomplete paired comparisons. By using this model, we evaluate the weights and dispersions of several criteria and alternatives, and then overall evaluation can be estimated by these weights. Furthermore we obtain the information about characteristics of evaluators by estimating the factor scores. In order to estimate the parameters, we use the Markov Chain Monte Carlo (MCMC) method. This proposed model is applied to brand evaluation by students.
