A group multicriteria decision analysis module based on fuzzy extension of TOPSIS method

The theory of group decision making is widely studied and applied in various fields of human activity. The theory of group decision making proposes various voting methods, assessing the consensus among the participants in the group analysis of decisions and recommendations for choosing/ranking alternatives. Different computer systems are developed to implement the process of group analysis and decision support for practical applications. The paper presents the DecernsFMCDA-G-FT framework for group multicriteria decision analysis based on the fuzzy TOPSIS model. The framework is a component of the group decision support system DecernsFMCDA-G under development. The system provides the necessary functionality to define a problem, collect expert information, visualize individual and group preferences, rank alternatives, analyze the results. Visualization of individual preferences, group assessments and the possibility of choosing different approaches for ranking the alternatives give a visual representation of the process of group multicriteria analysis. When solving applied problems, input fuzzy quantities of various shapes, several methods for calculating functions of fuzzy numbers as well as various methods for ranking fuzzy quantities can be used. The problem of multicriteria sorting candidates for employment is solved by using the Decerns-FMCDA-G-FT framework. The developed module is intended for study of decision theory within universities' courses, risk analysis and management and for multicriteria analysis of a wide range of scientific and applied problems.