Method of ranking alternatives based on given norms

The best examples in a given subject area are used to shape the appearance of the designed product. The selection of the product prototype is carried out using multidimensional optimization methods based on criteria and value/utility theory. The paper proposes to use bidirectional (two-sided) requirements for indicator values that are implemented through the norm model. Prior to assessing indicators based on superiority relations within a finite set of alternatives, an analysis is conducted to verify compliance with the norm. This approach enables the ordering of objects based on the magnitude of deviation from the norm on both sides of its boundaries. An experimental study in the selection and ranking system was performed to compare the results of ordering objects relative to the norm and one-sided requirements for indicator values. Unmanned aerial vehicles were considered as evaluation objects. Unidirectional requirements for indicator values were modeled using linear and logistic functions, while bidirectional requirements were modeled by logistic functions of the norm model fronts. The experiments showed a difference in the results obtained on the basis of one-sided and two-sided requirements. The difference in the obtained ratings of unmanned aerial vehicles was assessed using the Kendall rank correlation coefficient. The obtained results indicate the novelty of the proposed method of ranking objects relative to the norm, which can be used to select a prototype of the designed product and a version of an existing object that meets the norm's requirements for indicator values.