# A HYBRID APPROACH TO LOCALLY OPTIMIZED INTERPRETABLE PARTITIONS OF FUZZY NEURAL MODELS

### Wanqing Zhao, Kang Li, George W. Irwin, Qun Niu

#### Abstract

Many learning methods have been proposed for Takagi-Sugeno-Kang fuzzy neural modelling. However, despite achieving good global performance, the local models obtained often exhibit eccentric behaviour which is hard to interpret. The problem here is to find a set of input space partitions and, hence, to identify the corresponding local models which can be easily understood in terms of system behaviour. A new hybrid approach for the construction of a locally optimized, functional-link-based fuzzy neural model is proposed in this paper. Unlike the usual linear polynomial models used for the rule consequent, the functional link artificial neural network (FLANN) is employed here to achieve a nonlinear mapping from the original model input space. Our hybrid learning method employs a modified differential evolution method to give the best fuzzy partitions along with the weighted fast recursive algorithm for the identification of each local FLANN. Results from a motorcycle crash dataset are included to illustrate the interpretability of the resultant model structure and the efficiency of the new learning technique.

#### References

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#### Paper Citation

#### in Harvard Style

Zhao W., Li K., W. Irwin G. and Niu Q. (2011). **A HYBRID APPROACH TO LOCALLY OPTIMIZED INTERPRETABLE PARTITIONS OF FUZZY NEURAL MODELS** . In *Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: FCTA, (IJCCI 2011)* ISBN 978-989-8425-83-6, pages 461-465. DOI: 10.5220/0003626304610465

#### in Bibtex Style

@conference{fcta11,

author={Wanqing Zhao and Kang Li and George W. Irwin and Qun Niu},

title={A HYBRID APPROACH TO LOCALLY OPTIMIZED INTERPRETABLE PARTITIONS OF FUZZY NEURAL MODELS},

booktitle={Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: FCTA, (IJCCI 2011)},

year={2011},

pages={461-465},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0003626304610465},

isbn={978-989-8425-83-6},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the International Conference on Evolutionary Computation Theory and Applications - Volume 1: FCTA, (IJCCI 2011)

TI - A HYBRID APPROACH TO LOCALLY OPTIMIZED INTERPRETABLE PARTITIONS OF FUZZY NEURAL MODELS

SN - 978-989-8425-83-6

AU - Zhao W.

AU - Li K.

AU - W. Irwin G.

AU - Niu Q.

PY - 2011

SP - 461

EP - 465

DO - 10.5220/0003626304610465