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Two-Stage Discriminative Feature Selection

  • Xiaobin ZhiEmail author
  • Shaoru WuEmail author
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1075)

Abstract

Recently, a filter supervised feature selection method, namely discriminative feature selection (DFS), was proposed, which combines linear discriminant analysis (LDA) and sparsity regularization effectively. However, DFS is computationally expensive due to the use of eigenvalue decomposition on large matrix. In this paper, we propose a two-stage DFS method, namely TSDFS, to improve the efficiency and keep the accuracy of classification. A direct LDA based feature selection is firstly performed to achieve dimension reduction preprocessing of the data. Then, a DFS procedure is performed efficiently on the reduced data in the second stage. The high efficiency of the whole TSDFS is credited with the high efficiency of dimension reduction preprocessing. In addition, we employ nested cross-validation technology to achieve automatic parameter selection for TSDFS. Extensive experimental results based on several benchmark data sets validate the effectiveness of TSDFS.

Keywords

Feature selection Linear Discriminant Analysis Two-stage method 

Notes

Acknowledgements

This work is supported by the National Science Foundation of China (Grant nos. 61671377, 61102095, 61571361 and 11401045), and the Science Plan Foundation of the Education Bureau of Shanxi Province (No. 18JK0719), and New Star Team of Xi’ an University of Posts and Telecommunications (Grant no. xyt2016-01).

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.School of ScienceXi’an University of Posts and TelecommunicationsXi’anChina
  2. 2.School of Communication and Information EngineeringXi’an University of Posts and TelecommunicationsXi’anChina

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