TitleA review on the construction of hierarchical fuzzy systems
Publication TypeJournal Article
Year of Publication2002
AuthorsTorra V
JournalInt. J. of Intelligent Systems, (en el special issue on hierarchical fuzzy systems)

Fuzzy rule based systems are nowadays one of the most successful applications of fuzzy sets and fuzzy logic. Most applications use a flat set of fuzzy rules. However, in complex applications with a large set of variables, it is not appropriate to define the system with a flat set of rules because, among other problems, the number of rules increases exponentially with the number of variables. Hierarchical fuzzy systems is one of the alternatives in the literature to overcome this problem. In this work we review the last results related with this type of fuzzy systems.