### Abstract

Fuzzy neural networks are hybrid systems that combine the theories of fuzzy logic and neural networks. By incorporating in these hybrid systems the ability to self-organize their network structure, self-organizing fuzzy neural networks (SOFNNs) are created. The SOFNNs have enhanced ability to identify adaptive models, mainly for representing nonlinear and time-varying complex systems, where little or insufficient expert knowledge is available to describe the underlying behavior. Problems that arise in these systems are large dimensions, time-varying characteristics, large amounts of data and noisy measurements, as well as the need for an interpretation of the resulting model. This chapter presents an algorithm for on-line identification of a self-organizing fuzzy neural network (SOFNN). The SOFNN provides a singleton or Takagi-Sugeno (TS) type fuzzy model. It therefore facilitates extracting fuzzy rules from the training data. The algorithm is formulated to guarantee the convergence of both the estimation error and the linear network parameters. It generates a fuzzy neural model with a high accuracy and compact structure. Superior performance of the algorithm is demonstrated through its applications for function approximation, system identification, and time-series prediction in both industrial and biological systems.

Original language | English |
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Title of host publication | Evolving Intelligent Systems: Methodology and Applications, IEEE Press Series on Computational Intelligence |

Editors | Plamen Angelov, Dimitar Filev, Nik Kasabov |

Publisher | John Wiley & Sons, Inc. |

Pages | 256-296 |

ISBN (Print) | 0-470-28719-5 |

Publication status | Published - 2010 |

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## Cite this

Prasad, G., Leng, G., McGinnity, TM., & Coyle, D. (2010). On-line Identification of Self-organizing Fuzzy Neural Networks for Modelling Time-varying Complex Systems. In P. Angelov, D. Filev, & N. Kasabov (Eds.),

*Evolving Intelligent Systems: Methodology and Applications, IEEE Press Series on Computational Intelligence*(pp. 256-296). John Wiley & Sons, Inc.. http://www.wiley-vch.de/publish/en/books/forthcomingTitles/EE00/0-470-28719-5/?sID=b89813f6a74d10df48dfd51950957034