Earticle

초록

영어

A novel approach to feature selection is proposed for data space defined over continuous features. This approach can obtain a subset of features, such that the subset features can discriminate class labels of objects and the discriminant ability is prior or equivalent to that of the original features, so to effectively improve the learning performance and intelligibility of the classification model. According to the spatial distribution of objects and their classification labels, a data space is partitioned into subspaces, each with a clear edge and a single classification label. Then these labelled subspaces are projected to each continuous feature. The measurement of each feature is estimated for a subspace against all other subspace-projected features by means of statistical significance. Through the construction of a matrix of the measurements of the subspaces by all features, the subspace-projected features are ranked in a descending order based on the discriminant ability of each feature in the matrix. After evaluating a gain function of the discriminant ability defined by the best-so-far feature subset, the resulting feature subset can be incrementally determined. Our comprehensive experiments on the UCI Repository data sets have demonstrated that the approach of the subspace-based feature ranking and feature selection has greatly improved the effectiveness and efficiency of classifications on continuous features.

목차

Abstract
 1. Introduction
 2. Basic Concepts
  2.1. Information Model and Feature Selection
  2.2. Distribution Center and Radius
 3. Feature Selection on Continuous Features
  3.1. Covers and Its Optimization
  3.2. Matrix of Feature Discriminant Ability
  3.3. Feature Ranking
  3.4. Gains of Discriminant Ability of Feature Subset
  3.5. FSFSF Algorithm
 4. Experiments
  4.1. Using CoverSet as Classifier
  4.2. Effectiveness of Feature Ranking
  4.3. Effectiveness of Feature Selection
 5. Conclusions
 Acknowledgment
 References

키워드

저자

• Wang Hong-Wei [ College of Geophysics and Information Engineering, China University of Petroleum, Beijing, 102249, China, College of Information Science and Technology, Bohai University, Jinzhou 121013, China ]
• Li Guo-He [ College of Geophysics and Information Engineering, China University of Petroleum, Beijing, 102249, China ]
• Li Xue [ School of Information Technology and Electric Engineering, University of Queensland, Brisbane 4072, Australia ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Multimedia and Ubiquitous Engineering

• 간기

  월간

• pISSN

  1975-0080

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605