【摘 要】
：
分析数值决策表离散化方案的度量指标,包括断点数、条件信息熵、粒度熵、类-属性互信息、类-属性互相依赖冗余等.认为相容决策表的条件信息熵和类-属性互信息都是常数,对离散
【机 构】
：
烟台大学计算机科学与技术学院,上海大学计算机工程与技术学院,
论文部分内容阅读
分析数值决策表离散化方案的度量指标,包括断点数、条件信息熵、粒度熵、类-属性互信息、类-属性互相依赖冗余等.认为相容决策表的条件信息熵和类-属性互信息都是常数,对离散化方案不再有指导作用.讨论粒度熵与互相依赖冗余的关系,证明粒度熵随断点的加入而增加.设计实验度量这些指标之间的关系,实验发现,断点数和粒度熵与预测精度之间的相关程度不相上下,和具体的数据集有关.
This paper analyzes the metrics of discretization schemes in numerical decision table, including the number of breakpoints, conditional information entropy, granularity entropy, class-attribute mutual information, class-attribute dependency redundancy, etc. The conditional information entropy and class-attribute Mutual information is a constant and no longer instructive for the discretization scheme.We discuss the relationship between granularity entropy and interdependent redundancy and prove that the granularity entropy increases with the addition of breakpoints.Experimental experiments are designed to measure the relationship between these indicators, , The correlation between the number of breakpoints and granularity entropy and prediction accuracy is comparable with the specific data set.
其他文献
We present stereoscopic observations of six sequential eruptions of a filament in the active region NOAA 11045 on 2010 Feb 8, with the advantage of the STEREO t
Based on hourly precipitation data in eastern China in the warm season during 1961 2000,spatial distributions of frequency for 20 mm h-1 and 50 mm h-1 precipita
Vegetation and rainfall are two important factors affecting soil erosion and thus resulting in nutrient loss in the Chinese Loess Plateau.A field experiment was
Both water vapor and heat processes play key roles in producing surface rainfall.While the water vapor effects of sea surface temperature and cloud radiative an
翻译等值主要是指语义等值.由于文化差异及表达习惯等等,要做到语义完全等值几乎是不可能的,但翻译时尽可能地考虑各种因素,采取适当的策略,就有可能达到最大程度的语义等值.
A real case study for the transformation of Tropical Storm (TS) Haima (2004) into an extratropical cyclone (EC) is carried out numerically since,after landfall,
The Chinese Academy of Meteorological Sciences (CAMS) two-moment bulk microphysics scheme was adopted in this study to investigate the representation of cloud a
目前,学界关于语言教学方法的研究和探讨繁多,理想的教学模式、有效的教学方法,一直是长期耕耘于教育事业的教育家、学者们不懈追求的全新教学理念.构建新型、有效的翻译教学
一定社会的核心价值理念,体现了一定社会制度的性质和价值目标指向.研究中国特色社会主义的核心价值理念对坚持中国特色社会主义道路有重要的理论和实践意义.
在综合分析区域地质、构造、沉积等资料的基础上,结合中国西北地区中生代构造背景、火成岩分布特征、平衡剖面的研究和热史方面的研究成果,以及参照碎屑矿物系数的时空展布特