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Data Mining and Medical Informatics - page 15 / 40

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Ad hoc approach for determining network structure and training parameters- Trial & Error ?

Opacity or black-box nature gives poor explanation capabilities which are important in medicine

Limitations of Neural Networks

 Significant inputs are not immediately obvious

 When to stop training to avoid over-fitting ?

 Local Minima may hinder optimum solution

x

Y

F(x) ?

G(x)

G(x) is ‘distributed’

in a maze of network weights

x

Y

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