摘要
正确分类率β是变精度粗糙集模型中重要的参数之一.针对变精度粗糙集中β参数的确定缺乏可预见性的问题,提出了在确定近似分类质量γ下β取值范围的确定方法.首先在选取特定β值的情况下,根据约简条件求取所有β约简;然后在近似分类质量保持不变的前提下,确定β参数的取值范围;最后通过一个算例验证了该方法的有效性.
The correct classification rate β is one of the important parameter of variable precision rough sets model. To the problem that the variable precision rough set lacks a feasible method to determine the β parameter; in this paper, an effective method is developed to confirm the range of β value by the γ value of approximate quality of classification. First, we calculate all the value of β reduction according to reduction condition on the base that β value is certain.Furthermore, we will confirm the range of β value on the base that the approximate quality of classification is fixed; Finally, an example is given to approve the effectiveness of the nronosed method.
出处
《湖南理工学院学报（自然科学版）》
CAS
2008年第1期11-13,共3页
Journal of Hunan Institute of Science and Technology(Natural Sciences)
关键词
变精度粗糙集
近似分类质量
β约简
β参数
variable precision rough sets
approximate quality of classification
β reduction
β parameter
