ABSTRACT

This chapter deals with a substantial flexibility to exploit different aggregation mechanisms and describes a process of interaction among decision makers to achieve an increasing level of consistency within the group. It explores witnessing a highly diversified plethora of approaches to multiperson or group decision-making processes realized in the setting of fuzzy sets. The chapter introduces a concept of granular reciprocal matrices and emphasize a role of information granularity being regarded here as an important conceptual and computational resource which can be exploited as a means to elevate the level of consensus to be reached. It provides with a unique possibility to navigate within the space of priorities assigned to the individual alternatives. The chapter considers the problem of moving from linguistic descriptors to their operational mode where the descriptors are associated with some information granules and become essential to any further processing.