CAJ | 학술논문

属性约简是粗糙集理论进行知识获取的核心问题之一。针对现实信息系统中属性值取值不确定的情况，结合灰色系统理论对集中有序关系进行扩展，建立了灰色信息系统中趋于某个标准值的一种偏好关系，并以集中有序关系下的优势度为启发式信息，给出了属性的重要性度量，在此基础上提出了适合于属性值为连续灰数的信息系统的属性约简算法，给出了约简的实际操作方法，并通过实例验证了算法的可行性。
속성약간시조조집이론진행지식획취적핵심문제지일。침대현실신식계통중속성치취치불학정적정황，결합회색계통이론대집중유서관계진행확전，건립료회색신식계통중추우모개표준치적일충편호관계，병이집중유서관계하적우세도위계발식신식，급출료속성적중요성도량，재차기출상제출료괄합우속성치위련속회수적신식계통적속성약간산법，급출료약간적실제조작방법，병통과실례험증료산법적가행성。
Attribute reduction is very important to knowledge acquisition in rough set theory. Considering the reality that many attributes values are uncertain in real information system, ordered concentration relation combined with gray system theory is expanded. A kind of preference relation that attribute values tend to the standard values is established in gray information system. The significance of attribute is defined and the degree of dominance is used as heuristic information. On this basis, the algorithm of attributes reduction is proposed to make it suitable for the information system which attri-butes valued continuous gray number. A practical operation method for computing reduction is given and the feasibility of algorithm is verified via case.