A Multi-perceptual-Based Approach for Group Decision Aiding.

This paper presents a multi-perceptual framework for multi-criteria group decision aiding based on unbalanced hesitant linguistic information. The concept of a perceptual map is introduced to break the uniformity among the set of basic labels considered in linguistic term sets. Projected perceptual maps are considered to provide multi-perceptual frameworks for group decision aiding. This approach enables decision-makers to use sets of labels or different meanings for the same set of labels (since not all decision-makers feel comfortable using the same linguistic term set when expressing their judgements). Distances and measures of centrality and agreement or consensus are revised based on the concept of a perceptual map and a projected perceptual map that enables us to merge information from decision makers.