float ThresholdFunction(E_THRESHOLDFUNCTION function, float input, float poise = 1)
{
switch (function)
{
case E_THRESHOLDFUNCTION.SIGMOID:
return(1.0f / (1 + math.exp(-input)));
case E_THRESHOLDFUNCTION.TANH:
return(math.tanh(input));
case E_THRESHOLDFUNCTION.ARCTAN:
return(math.atan(input));
case E_THRESHOLDFUNCTION.ALGEBRAIC:
return(input / (1 + math.abs(input)));
case E_THRESHOLDFUNCTION.ALGEBRAICWITHPOISE:
input = input * poise;
var absInput = math.abs(input);
return((math.atan(input) * absInput) / (1 + absInput));
case E_THRESHOLDFUNCTION.NONE:
return(input);
default:
return(input);
}
}
void ComputeThresholdFunctions(int startIndex)
{
for (int i = startIndex, length = startIndex + ResultCountPerNetwork,
lengthMinusOutputCount = length - PerceptronPerLayer[PerceptronPerLayer.Length - 1]; i < length; ++i)
{
E_THRESHOLDFUNCTION function = i >= lengthMinusOutputCount ? outputLayerFunction : hiddenLayerFunction;
Results[i] = ThresholdFunction(function, Results[i], Poise);
}
}
