【摘 要】
：
利用粗糙模糊集的概念定义了模糊目标信息系统的α下(上)分配约简,并讨论了它们同下(上)近似约简、下(上)最大分布约简的关系.相应于下(上)近似约简、下(上)最大分布约简和
【机 构】
：
西安交通大学理学院信息与系统科学研究所,西安交通大学理学院信息与系统科学研究所 陕西西安710049空军工程大学文理学院,陕西西安710051 ,陕西西安710049
论文部分内容阅读
利用粗糙模糊集的概念定义了模糊目标信息系统的α下(上)分配约简,并讨论了它们同下(上)近似约简、下(上)最大分布约简的关系.相应于下(上)近似约简、下(上)最大分布约简和α下(上)分配约简给出了把模糊目标信息系统变换成对应的一致目标信息系统的方法.证明了变换前的模糊目标信息系统的下(上)近似约简、下(上)最大分布约简和α下(上)分配约简同变换后的对应的一致目标信息系统的属性约简是相同的,从而求模糊目标信息系统的属性约简可转化为求一致目标信息系统的约简.
The concept of rough fuzzy sets is used to define α (upper) allocation reductions of fuzzy target information systems, and their relation to the lower approximation (upper) reduction and the maximum (lower) distribution is discussed. The approximate distribution of the fuzzy objective information system is transformed into the corresponding consistent target information system by using the approximate reduction, the maximum distribution reduction of the lower (upper) The approximate reduction of the upper (upper), the maximum of the lower distribution (upper) and the reduction of the distribution of α (upper) are the same with those of the corresponding consistent target information system after transformation, so that the fuzzy target information System attribute reduction can be transformed into the reduction of consistent target information system.
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