Performance aggregation in decision processes is easy to implement, amplified by clarity with varying degrees of compensation that are a measure of the decision-maker’s willingness to consider all goals and constraints globally. We extend this concept, suggesting that the notion of compensation should be applied to another step of the decision process. We presented a mathematical function for this — the DI-operator – that complies with the notion of degrees of compensation. A query interface is used with a personal computer and the algorithm is applied in purchase decisions of mechanical materials, partner selection, and urban vehicle delivery scheduling.