Function approximation using robust wavelet neural networks

Sheng-Tun Li, Shu Ching Chen

Research output: Contribution to journalConference article

29 Citations (Scopus)

Abstract

Wavelet neural networks (WNN) have recently attracted great interest, because of their advantages over radial basis function networks (RBFN) as they are universal approximators but achieve faster convergence and are capable of dealing with the so-called "curse of dimensionality." In addition, WNN are generalized RBFN. However, the generalization performance of WNN trained by least-squares approach deteriorates when outliers are present. In this paper, we propose a robust wavelet neural network based on the theory of robust regression for dealing with outliers in the framework of function approximation. By adaptively adjusting the number of training data involved during training, the efficiency loss in the presence of Gaussian noise is accommodated. Simulation results are demonstrated to validate the generalization ability and efficiency of the proposed network.

Original languageEnglish
Pages (from-to)483-488
Number of pages6
JournalProceedings of the International Conference on Tools with Artificial Intelligence
Publication statusPublished - 2002 Dec 1
Event14th International Conference on Tools with Artificial Intelligence - Washington, DC, United States
Duration: 2002 Jun 42002 Nov 6

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All Science Journal Classification (ASJC) codes

  • Software

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