Simple and absolute special majorities generated by ordered weighted averaging operators

Simple and absolute special majorities are decision procedures used very often in real life. However, these rules do not allow individuals to express the intensity with which they prefer some alternatives to others. In order to consider this situation, individual preferences can be represented by fuzzy preferences through values located between 0 and 1. Then the collective preference is obtained by means of aggregation functions. In this paper we use ordered weighted averaging (OWA) operators in order to aggregate individual preferences and we generalize simple and absolute special majorities by means of OWA operators.