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A method for optimization of fuzzy reasoning by genetic algorithms and its application to discrimination of myocardial heart disease

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2 Author(s)
D. -Y. Tsai ; Dept. of Electr. Eng., Gifu Nat. Coll. of Technol., Japan ; S. Watanabe

A genetic algorithm (GA)-based method is proposed and implemented for determining the set of fuzzy membership functions that can provide an optimal classification of myocardial heart disease from ultrasonic images. Gaussian-distributed membership functions (GDMF's) constructed from the texture features inherent in the ultrasound images are used, and the coefficients acted as a set of parameters to adjust the magnitudes of the standard deviations of the GDMF's are employed. Optimal coefficients are determined through training process using the GA. The GA-based fuzzy classifier is used to discriminate two sets of echocardiographic images, namely, normal and abnormal cases, diagnosed by a highly trained physician. The results of the authors' experiments are very promising. The authors' achieve an average classification rate of 96%. The results indicate that the method has potential utility for computer-aided diagnosis of myocardial heart disease.

Published in:

IEEE Transactions on Nuclear Science  (Volume:46 ,  Issue: 6 )