DECISION MAKING BASED ON DUALITY BETWEEN POSITIVE AND NEGATIVE EVALUATIONS

This paper proposes a model of dual hierarchy to study a decision-making structure with positive and negative. It is necessary to evaluate a decision in negative stand point, such as insufficient, hatred, pressure, as a cause of fraud, as well as positive evaluation. In order to treat the positive and negative elements, we propose a model of dual hierarchy process which can evaluate from positive and negative points. Moreover, a technique to judge a consistency of dual evaluation is presented, using a concept of reachability matrix.