Reductions of variable precision covering decision information system

Computer Engineering and Applications ›› 2014, Vol. 50 ›› Issue (6): 123-126.

Previous Articles Next Articles

Reductions of variable precision covering decision information system

XU Qingyuan1, LI Jinjin2, ZHANG Yanlan1

1.Department of Computer Science and Engineering, Minnan Normal University, Zhangzhou, Fujian 363000, China
2.School of Mathematics, Minnan Normal University, Zhangzhou, Fujian 363000, China

Online:2014-03-15 Published:2015-05-12

变精度覆盖决策信息系统的约简

许晴媛1，李进金2，张燕兰1

1.闽南师范大学计算机科学与工程系，福建漳州 363000
2.闽南师范大学数学与信息科学学院，福建漳州 363000

Abstract

Abstract: The variable precision method is introduced into the covering decision information system. Definitions of the variable precision covering lower and upper approximations are given. Some properties and reductions of them are discussed. Their relationships with the covering distribution’s reduction, the largest covering distribution’s reduction and the covering lower and upper approximations’ reduction are analyzed. Examples are given to illustrate the conclusions.

Key words: variable precision, covering, decision information system, reduction

摘要： 把变精度方法引入到覆盖决策信息系统中，给出变精度覆盖下近似与变精度覆盖上近似的定义。进而讨论了变精度覆盖下近似与变精度覆盖上近似的若干性质及约简。分析了它们与覆盖分布约简、最大覆盖分布约简、覆盖下近似约简、覆盖上近似约简之间的关系。并给出实例进行说明。

关键词: 变精度, 覆盖, 决策信息系统, 约简

XU Qingyuan1, LI Jinjin2, ZHANG Yanlan1. Reductions of variable precision covering decision information system[J]. Computer Engineering and Applications, 2014, 50(6): 123-126.

许晴媛1，李进金2，张燕兰1. 变精度覆盖决策信息系统的约简[J]. 计算机工程与应用, 2014, 50(6): 123-126.

[1]	DAI Qi, LI Min, LIU Yang, LI Lihong. Fast Attribute Reduction Algorithm Based on Fuzzy Hierarchical Quotient Space [J]. Computer Engineering and Applications, 2021, 57(4): 55-60.
[2]	GAO Tianyu, WANG Qingrong, YANG Lei. Data Mining Model Based on Attribute Dependability Enhancement of Rough Set [J]. Computer Engineering and Applications, 2021, 57(3): 87-93.
[3]	ZHANG Chengling, LI Jinjin, LIN Yidong. Attribute Reduction in Formal Contexts Based on OE-Concept Lattices [J]. Computer Engineering and Applications, 2021, 57(15): 82-89.
[4]	LIU Guizhi. Incremental Attribute Reduction of Incomplete Hybrid Data Based on Dimension Change [J]. Computer Engineering and Applications, 2021, 57(12): 161-169.
[5]	LI Mengmeng, SHAO Liangzhi, CUI Wenchao, SUN Shuifa. Joint Bilateral Filtering Method for Ultrasound Image by Fisher-Tippett Distribution Fitting [J]. Computer Engineering and Applications, 2020, 56(9): 221-227.
[6]	WANG Yiwu, YANG Yuwang. Research and Application of Spatial Projection in [K]-means Algorithm [J]. Computer Engineering and Applications, 2020, 56(7): 200-204.
[7]	HAN Song, HAN Qiuhong. Review of Semi-Supervised Learning Research [J]. Computer Engineering and Applications, 2020, 56(6): 19-27.
[8]	WEI Shichao, LI Xin, ZHANG Yichi, ZHOU Xiaofeng, LI Shuai. Dimension Reduction and Visualization of Mixed-Type Data Based on E-t-SNE [J]. Computer Engineering and Applications, 2020, 56(6): 66-72.
[9]	ZHANG Bo, JIA Huayu, MA Jun. Estimation of Air Condition for Unmanned Aerial Vehicle Based on RS-GA Neural Network [J]. Computer Engineering and Applications, 2020, 56(4): 209-213.
[10]	QIU Jianrong, LUO Han. Improved Local Linear Embedding Algorithm and Its Application [J]. Computer Engineering and Applications, 2020, 56(3): 176-179.
[11]	GOU Haiwen, NING Aibing, HU Qin, ZHANG Huizhen. Reduction Backtracking Algorithm for Uncapacitated Facility Location Problem With Penalties [J]. Computer Engineering and Applications, 2020, 56(24): 43-49.
[12]	MOU En, ZHANG Xianyong, YAO Yuesong, DENG Qie. Class-Specific Attribute Reduct and Its Heuristic Algorithm of Neighborhood Approximation Condition-Entropy [J]. Computer Engineering and Applications, 2020, 56(24): 175-180.
[13]	ZHAN Peng, CHEN Lin, CAO Luhui, XU Haoran, LI Xueqing. Time Series Anomaly Detection Based on Kernel Turning Points Clipped Representation [J]. Computer Engineering and Applications, 2020, 56(23): 130-138.
[14]	SONG Jie, ZHU Yong, XU Bing. Batch Subtraction Update Variance Reduction Gradient Descent Algorithm BSUG [J]. Computer Engineering and Applications, 2020, 56(22): 117-123.
[15]	XIE Xinrui, LEI Xiuren, ZHAO Yan. Application of Mutual Information and Improved PCA Dimensionality Reduction Algorithm in Stock Price Forecasting [J]. Computer Engineering and Applications, 2020, 56(21): 139-144.

Reductions of variable precision covering decision information system

变精度覆盖决策信息系统的约简

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics