一种基于支持向量机的特征选择算法  

A Multi-class Feature Selection Algorithm Based on Support Vector Machine

作　　者：代琨[1] 于宏毅[1] 李青[1] 

机构地区：[1]解放军信息工程大学信息系统工程学院,郑州450002

出　　处：《模式识别与人工智能》2014年第5期463-471,共9页Pattern Recognition and Artificial Intelligence

基　　金：国家科技重大专项项目(No.2010ZX03006-002)资助

摘　　要：当特征集合存在强相关的特征子集且共同对分类问题有重要贡献时,传统方法通常从该子集中随机选择一个特征,导致数据可读性和分类性能下降.为此,面向多分类问题,提出一种基于支持向量机的特征选择算法,并设计一种快速迭代算法.该算法能够自动选择或剔除强相关的特征子集,在得到有效特征的同时实现特征降维.利用人工数据集和标准数据集进行试验,结果表明文中算法在特征选择可行性和有效性方面都有良好表现.Most existing feature selection algorithms usually select only one feature randomly from the highly correlated feature subset with great contribution to classification,which results in the degradation of data readability and classification performance. To overcome the problem, a multi-class feature selection algorithm based on support vector machine （ MFSSVM ） is proposed. The proposed feature selection algorithm permits highly correlated features to be selected or removed together, and it allows dimension reduction while obtaining effective features. The experimental results on both simulated datasets and benchmark datasets illustrate the feasibility and effectiveness of the feature set selected by MFSSVM.

关 键 词：特征选择 支持向量机 分类 

分 类 号：TP181[自动化与计算机技术—控制理论与控制工程]