GROUP DECISION IN AHP WITH TWO TYPES OF OPINION AGGREGATION AND SENSITIVITY ANALYSIS

The use of the Hierarchical Analysis Method as a decision support methodology is highly widespread in the academic literature. However, the correct use of the methodology and its implications must be well structured to avoid bias. In the case of multiple experts' involvement, the use of methodologies for aggregation of judgments or aggregation of experts' priorities must be well-founded and always followed by sensitivity analysis. The objective of this article is to demonstrate that the correct use of the aggregation model as well as sensitivity analysis are fundamental in the decision-making process. Thus, a group decision review, theoretical concepts of AHP, aggregation of judgments and aggregation of priorities, sensitivity analysis, an example of application of AHP using the two aggregation methods, and sensitivity analysis through the exploratory method with the respective results and conclusions are presented.