Theory and Approaches of Unascertained Group Decision-Making

2DECISION-MAKING METHOD OF INTERVAL NUMBER RECIPROCAL AND COMPLEMENTARY COMPARISON MATRIX

2.1 Introduction

The analytical hierarchy process (AHP) is widely used in the multiple-criteria decision-making fields (see [79–82]). When using the AHP, a decision maker often makes imprecise judgments or inconsistent judgments due to the complexity of the decision-making problem and adopts the interval numbers for imprecise judgments. Then, an interval number comparison matrix (INCM) is obtained. The INCM has been studied by many researchers, and the main content and contribution of this chapter are as follows:

1. Consistency definition and consistency test approach: To our knowledge, few researchers have focused on the consistency definition. Wei et al. ...