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An Extreme Learning Machine Architecture Based on Volterra Filtering and PCA

Li CHEN, Ling YANG, Juan DU, Chao SUN, Shenglei DU, Haipeng XI

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Summary :

Extreme learning machine (ELM) has recently attracted many researchers' interest due to its very fast learning speed, good generalization ability, and ease of implementation. However, it has a linear output layer which may limit the capability of exploring the available information, since higher-order statistics of the signals are not taken into account. To address this, we propose a novel ELM architecture in which the linear output layer is replaced by a Volterra filter structure. Additionally, the principal component analysis (PCA) technique is used to reduce the number of effective signals transmitted to the output layer. This idea not only improves the processing capability of the network, but also preserves the simplicity of the training process. Then we carry out performance evaluation and application analysis for the proposed architecture in the context of supervised classification and unsupervised equalization respectively, and the obtained results either on publicly available datasets or various channels, when compared to those produced by already proposed ELM versions and a state-of-the-art algorithm: support vector machine (SVM), highlight the adequacy and the advantages of the proposed architecture and characterize it as a promising tool to deal with signal processing tasks.

Publication
IEICE TRANSACTIONS on Information Vol.E100-D No.11 pp.2690-2701
Publication Date
2017/11/01
Publicized
2017/08/02
Online ISSN
1745-1361
DOI
10.1587/transinf.2017EDP7089
Type of Manuscript
PAPER
Category
Information Network

Authors

Li CHEN
  Lanzhou University
Ling YANG
  Lanzhou University
Juan DU
  Lanzhou University
Chao SUN
  Lanzhou University
Shenglei DU
  Lanzhou University
Haipeng XI
  Lanzhou University

Keyword