Atanassov [1,2] and Szmidt and Kacprzyk[7,8] studied various methods for measuring distances between intuitionistic fuzzy sets. In this paper, we consider interval-valued intuitionistic fuzzy sets and discuss these methods for measuring distances between interval-valued intuitionistic fuzzy sets.

Keywords: intuitionistic fuzzy sets,interval-valued intuitionistic fuzzy set,Hamming distance,Euclidean distance