How to Deal with Overgood and Underbad Alternatives in Bipolar Method

Bipolar is one of the Multiple Attribute Decision Making methods, based on the concept of Bipolar reference objectives, proposed by Konarzewska-Gubala. The essence of the analysis in the Bipolar method consists in a fact that the decision alternatives are not compared directly to each other, but they are confronted to the two sets of reference objects: desirable and non-acceptable. Practical application of the method showed some its shortcomings. It may happen that a decision alternative can be evaluated as better than a desirable reference object and simultaneously as worse than a non-acceptable object. The aim of the paper is to formulate modifications of the classical Bipolar approach to overcome such difficulties.