Abstract
In order to improve the exactness and the accuracy of evaluating results in AHP, in this paper, inexactness problem in construction of a pairwise comparison matrix is pointed out, and a concept of changeable quantitative value which corresponds to qualitative expression ‘absolute importance’ has been proposed. Furthermore, not only on theory but also on practice, a new construction method of pairwise comparison matrix has been also proposed. Finally, applying to a practical survey on the choice of travel routes, and by four scales and two kinds of calculation methods about weights, the validity and the appropriateness of this method synthetically have been verified in practice.
