A Fuzzy Delphi Consensus Methodology Based on a Fuzzy Ranking

Delphi multi-round survey is a procedure that has been widely and successfully used to aggregate experts’ opinions about some previously established statements or questions. Such are usually expressed as real numbers commentaries. The evolution of the consensus can be shown by an increase in agreement percentages, decrease number comments made. A reached when this percentage exceeds certain set threshold. If threshold not reached, moderator modifies questionnaire according he/she collected, following round begins. In paper, new fuzzy method introduced. On one hand, subjective judgments collected numbers, enriching approach. other such through computerized application able interpret numbers. Finally, we employ recently introduced ranking methodology, satisfying many properties human intuition, order determine whether expert’s opinion favorable enough (comparing with fixed indicates Agree Strongly Agree). cross-cultural validation was performed illustrate applicability proposed method. approach simple for two reasons: it does need defuzzification step answers, consider wide range only triangular trapezoidal