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山东大学学报（理学版） ›› 2017, Vol. 52 ›› Issue (3): 105-110.doi: 10.6040/j.issn.1671-9352.4.2016.216

• • 上一篇    

一种优化覆盖中心的三支决策模型

刘国涛1,2,张燕平1,2,徐晨初1,2   

  1. 1. 安徽大学计算机科学与技术学院, 安徽 合肥 230601;2. 安徽大学计算机智能与信号处理教育部重点实验室, 安徽 合肥 230601
  • 收稿日期:2016-06-01 出版日期:2017-03-20 发布日期:2017-03-20
  • 作者简介:刘国涛(1990— ),男,硕士研究生,研究方向为智能计算、三支决策.E-mail:gt.liu2016@gmail.com
  • 基金资助:
    国家自然科学基金资助项目(61175046);国家自然科学基金青年资助项目(61402006);安徽大学研究生学术创新项目(E14101002)

Three-way decisions model based on the optimal center covering algorithm

LIU Guo-tao1,2, ZHANG Yan-ping1,2, XU Chen-chu1,2   

  1. 1. School of Computer Science and Technology, Anhui University, Hefei 230601, Anhui, China;
    2. Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, Anhui University, Hefei 230601, Anhui, China
  • Received:2016-06-01 Online:2017-03-20 Published:2017-03-20

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摘要： 三支决策理论是传统二支决策上的拓展,具有三种决策规则,即接受、拒绝和不承诺。三支决策广泛适用于不确定或不完整信息的处理。基于覆盖算法的三支决策模型能够自动确定三个域,但是,传统覆盖算法的覆盖中心选取是个不可控的随机过程,单次实验的精度无法保证。因此,本文提出了一种优化覆盖算法中心的三支决策模型(optimal center in constructive covering algorithm, 简称OCCCA)。该模型结合最近均值思想,在获取覆盖中心时,先求取数据集同类样本的均值,然后选取与均值最近的样本作为覆盖中心,从而实现优化覆盖算法中心的三支决策模型。实验表明,OCCCA比传统覆盖算法在三支决策模型分类准确率上有平均5%的提高。

关键词: 三支决策, 构造性覆盖算法, 最近均值, 优化中心

Abstract: The three-way decisions model is the development of the traditional two-way decisions, and its three decisions include positive, negative, and boundary regions. The model widely used in the uncertain or incomplete information areas. The three-way decisions model is based on constructive covering algorithm(CCA)and it could automatic obtain three regions. However, the existing CCA is an uncontrollable random process with the covering center selected, that lead to the three-way decision classification accuracy uncertain. Thus we propose a novel three-way decision model to select the optimal center in constructive covering algorithm(OCCCA). The OCCCA model combines the nearest mean theory, obtains the mean of the one class in the data set, and then chooses the sample that nearest mean as the center. The experimental result shows that our methodology can improve about 5% than traditional CCA in the three-way decisions models classification accuracy.

Key words: center, constructive covering algorithm, three-way decisions, nearest mean theory

中图分类号: 

  • TP181
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