Impact of the presence of linguistic data on the decision aid process

Many decision situations are described using both numerical and linguistic values. Because of the presence of linguistic data, analytics are forced to apply appropriate measures. These measures are often applied arbitrary, without consulting the Decision Maker, which creates an intangible gap between the DM’s intentions and the final decision model. The paper analyses the impact of applying different conventions forutilising ling uistic values in the decision aiding process. The considered measures include quantification, fuzzy modelling and applying linguistic versions of MCDA methods. Concluding remarks describes advantages of the alignment of the decision aiding process to the Decision Maker’s problem formulation.