Guan Tao,Feng Boqin
(School of Electronics and Information Engineering,Xi'an Jiaotong Univeristy,Xi'an 710049,China)
Abstract:Based on fuzzy objective information systems' model,and combining with rough logic theory,a logic language,denoted as FRDL(fuzzy rough decision language),is proposed. The definitions, semantics, satisfiability and validity of FRDL and their related properties are given. Furthermore,the formulation and constructing ways of decision rules and reverse decision rules for fuzzy objective information systems are presented based on FRDL.The logic and reasoning rules described in FRDL provide decision support systems and inference machines, which are constructed by fuzzy objective information systems, with formal representation and reasoning method. The experimental results obtained from ophthalmological data,show that our formalization and reasoning methods are more reasonable.
Keywords:fuzzy objective information systems;fuzzy rough decision language;decision rules