Inheritance hierarchies based on approach to hedge algebras

In this paper, based on hedge algebras approach, we focus on the relationship subclass - superclass of fuzzy object-oriented database. based on the semantic approximation of the two fuzzy data, we identify the subtle class and build methods calculate quantitatively the fuzzy hierarchical in the relationships between subclass and superclass. Besides, multiple inheritance is a fairly complex problem when we study fuzzy object-oriented database models, so we also have launched plans to overcome the difficulties in the multiple inheritance of the class.