摘要
针对分类器的构建,在保证基分类器准确率和差异度的基础上,提出了采用差异性度量特征选择的多分类器融合算法(multi-classifier fusion algorithm based on diversity measure for feature selection,MFA-DMFS)。该算法的基本思想是在原始特征集中采用Relief特征评估结果按权值大小选择特征,构造特征子集,通过精调使各特征子集间满足一定的差异性,从而构建最优的基分类器。MFA-DMFS不但能提高基分类器的准确率,而且保持基分类器间的差异,克服差异性和平均准确率之间存在的相互制约,并实现这两方面的平衡。在UCI数据集上与基于Bagging、Boosting算法的多分类器融合系统进行了对比实验,实验结果表明,该算法在准确率和运行速度方面优于Bagging和Boosting算法,此外在图像数据集上的检索实验也取得了较好的分类效果。
The fusion of multiple classifiers is an important means of improving the efficiency of pattern recognition.The text,from the viewpoint of the accuracy of the component classifier as well as weight differences between the two classifiers,proposed that the multi-classifier fusion algorithm,based on differences in measurement,fell into a two-stage classifiers used to build the characteristics of the different components of a subset,the relief characteristics of the assessment results in accordance with the weights,were firstly used,from the original feature set to choose features to make into feature subset selection,and then by the fine-tuning to enable the feature subset to meet certain differences.Compared with the result of the experiments,it was found that the accuracy of the algorithm is always better than Bagging and the multiple classifiers fusion system constructed by Boosting algorithm.Moreover,its running speed is much higher than Bagging and Boosting algorithms.Finally,it was found that,in image database retrieval experiments,it has achieved better classification results.
出处
《计算机应用研究》
CSCD
北大核心
2012年第2期522-526,共5页
Application Research of Computers
基金
国家自然科学基金资助项目(51108209
50875112
70972048)
江苏省自然科学基金资助项目(BK2010339)
江苏省高校自然科学基金资助项目(10KJD580001)
江苏省博士创新基金资助项目(CXLX11_0593)
镇江市社会发展项目(FZ2008046)
关键词
特征选择
差异性度量
分类器融合
图像检索
PCA
仿真
feature selection
difference metric
classifier fusion
image retrieval
principle component analysis
simulation
作者简介
作者简介:梁军(1976-),男(回族),江苏扬州人,副教授,博士研究生,主要研究方向为智能交通、模式识别、多agent理论与应用(liangjun@ujs.edu.cn);
陈龙(1958-),男,江苏靖江人,教授,博导,主要研究方向为车辆动态设计模拟及控制;
汪若尘(1977-),男,河南信阳人,副教授,主要研究方向为车辆动态设计模拟及控制;
胥正川(1973-),男,江苏镇江人,副教授,博士(后),主要研究方向为移动商务;
胥杜杰(1975-),男,四川成都人,助理工程师,主要研究方向为信息系统与信息管理.