Sistemas de apoio à decisão em grupo multicritério : uma abordagem baseada em regras fuzzy
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Data
2009-11-30Autor
Santos, Fábio José Justo dos
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The use of fuzzy logic and fuzzy sets theory applied to decision making process
was initially proposed by Bellman and Zadeh (1970). Since then, the arisen of
unstructured problems associated with multi-criteria characteristics and group decision
making changed the way of dealing with these problems. The evolution of Decision
Support Systems (DSS) allowed them, not only to provide data and information, but
also to propose solutions to these problems. The goal of this work is to present a
framework for the development of DSS that deal with Multi-Criteria Group Decision
Making (MCGDM) problems through fuzzy rules. In this approach, we propose a
method capable of automatically generating a Fuzzy Rule Base with multi-criteria
characteristics for group decision making, that is, different influence degrees for each
decider and different importance degrees assigned to each variable are considered in
the model. This framework also contains a structural model of a Fuzzy System for
Group Decision Support aiming at adding DSS characteristics found in literature to
Fuzzy Systems. These characteristics include user/system interactivity and Model
Management Subsystem (MMS) described in this work. Finally, a case study designed
to validate the model is presented.