Abstract

A fuzzy node fuzzy graph is the extension of a fuzzy graph, and it has been applied to the social structure analysis, the instruction structure analysis and so on. The fuzzy node fuzzy graph is usually complicated, so, we would propose a transform method a fuzzy node fuzzy graph to a crisp node fuzzy graph by using T-Norm. But, the crisp node fuzzy graph is also complicated, we would construct its approximate graph. In this paper, we would not only explain about the transformation method and approximation method, but also its practical application to Sociometry analysis.