Q-rung Orthopair fuzzy sets and their similarity measures

This thesis consists of five sections. In Section 1, a detailed literature review and motivation of the thesis are presented. In Section 2, some fundamental definitions are given to be used in the next part of the thesis. In Section 3, Cosine, weighted Cosine, cotangent and weighted cotangent similarity measure methods between intuitionistic fuzzy sets existing in literature are presented and they are supported by examples. In Section 4, some similarity and weighted similarity measure methods of q-rung orthopair fuzzy sets based on distance measure are presented in the light of existing studies in the literature. Also, Dice and generalized Dice similarity measure methods for q-rung orthopair fuzzy sets in literature and examples of them are presented. In Section 5, some explanations about methods are given.