The distance between fuzzy sets in fuzzy metric spaces

We focus on the distance in fuzzy metric space. The general distance of general fuzzy sets are introduced. Some properties of Chebyshev distance of general fuzzy sets and normalized Hamming distance of general fuzzy sets are studied. Furthermore, some special metrics of two fuzzy interval valued sets are introduced. We give the source of the two forms of moore distance. Finaly, in Hausdorff metric space, the normalized Hamming distance are investigated. This research will provide the necessary tools for approximate reasoning.