Aibinu, Abiodun Musa and Salami, Momoh Jimoh Emiyoka and Shafie, Amir Akramin
(2010)
Application of modeling techniques to diabetes diagnosis.
In: 2010 IEEE EMBS Conference on Biomedical Engineering & Sciences (IECBES 2010), 30 November - 2 December 2010, Kuala Lumpur, malaysia.
Abstract
In recent times, the introduction of complex-valued neural
networks (CVNN) has widened the scope and applications
of real-valued neural network (RVNN) and parametric modeling
techniques. In this paper, new expert systems for automatic
diagnosis and classification of diabetes using CVNN and RVNN based parametric modeling approaches have been suggested. Application of complex data normalization
technique converts the real valued input data to complex
valued data (CVD) by the process of phase encoding over
unity magnitude. CVNN learn the relationship between the
input and output phase encoded data during training and
the coefficients of Complex-valued autoregressive (CAR)
model can be extracted from the complex-valued weights
and coefficients of the trained network. Classification of the obtained CAR or RVAR model coefficients results in required distinct classes for diagnosis purpose. Similar operations can be performed for real-valued autoregressive technique except for CVD normalization. The effect of data normalization techniques, activation functions, learning rate, number of neurons in the hidden layer and the number of epoch using the suggested techniques on PIMA INDIA diabetes dataset have been evaluated in this paper. Results obtained compares favorably with earlier reported results.
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