How to estimate sensitivites of a neural net model with exogenous variables?

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Anoush
Anoush am 10 Jul. 2014
Beantwortet: Anoush am 13 Jul. 2014
Is there a way to estimate the slope (first derivative) of the response function of a neural net model with respect to various inputs around a point? The measure I am looking for is similar to the beta coefficients in a linear regression.

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Greg Heath
Greg Heath am 11 Jul. 2014
Differentiate the corresponding equation. For example, differentiate w.r.t. x:
y = b2 + LW * tansig( b1 + IW * x )

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Anoush
Anoush am 13 Jul. 2014
Thank you Greg. Is there an easy way of accessing the arrays of the model (b1,b2,LW,IW)? I am researching this myself, but if there is an obvious way please let me know.

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