连续型特征的特征选取方法

王宏威 Wang, Hong-wei, 李国和 Li, Guo-he, 李雪 Li, Xue, 吴卫江 Wu, Wei-jiang and 李洪奇 Li, Hong-qi (2011) 连续型特征的特征选取方法. Zhongnan Daxue Xuebao (Ziran Kexue Ban), 42 Supp. 1: 651-655.

Author 王宏威 Wang, Hong-wei
李国和 Li, Guo-he
李雪 Li, Xue
吴卫江 Wu, Wei-jiang
李洪奇 Li, Hong-qi
Title 连续型特征的特征选取方法
Translated title Method of feature selection for continuous features
Language of Title chi
eng
Journal name Zhongnan Daxue Xuebao (Ziran Kexue Ban)   Check publisher's open access policy
Translated journal name Journal of Central South University (Science and Technology)
Language of Journal Name eng
chi
ISSN 1672-7207
Publication date 2011-09
Sub-type Article (original research)
Open Access Status
Volume 42
Issue Supp. 1
Start page 651
End page 655
Total pages 5
Place of publication Changsha, China
Publisher Zhongnan Daxue
Language eng
chi
Subject 1909 Geotechnical Engineering and Engineering Geology
2505 Materials Chemistry
2506 Metals and Alloys
3104 Condensed Matter Physics
Formatted abstract
根据对象在特征空间中的分布,划分连续特征空间为类别单一、边界清晰的多个子空间;把各个子空间分别投影到所有特征上,获取所有不同类别子空间对当前子空间特征分类能力的评估;通过构造分类能力评估矩阵,实现特征分类能力的特征排序。以特征排序为依据,选取特征子集,实现特征选取。实验结果表明,这种特征选取具有有效性和高效性。

In terms of the distribution of objects and their classification labels, the continuous feature space was partitioned into a variety of subspaces, each one with clear edge and unique classification label. After the projection of all the subspaces to each feature, the quality of each feature was estimated for a subspace opposite to all the other subspaces with different classification labels by means of statistical significance. Through construction of a matrix by all the estimate qualities of all features of all the subspaces, all the features was ranked from the highest classifying power to the lowset on the matrix for the feature space. According to the ranked-feature set, the feature selection was completed. The experimental results illustrate that the feature selection is efficient and effective.
Keyword Data reduction
Feature selection
Continuous attributes
Decision table
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
 
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