/// <summary>
/// Boundless mutation.
/// </summary>
/// <param name="v"></param>
/// <returns></returns>
static public double Mutate(double v, double sigma)
{
// Sigma=0.1 gives numbers in the range -0.5 to 0.5.
// Multiply by delta to adjust the mutation's scale in line with magnitude of the value.
v += RandLib.gennor(0, 0.015); //;0.025);
return(v);
}
//
// /// <summary>
// /// Boundless mutation.
// /// </summary>
// /// <param name="v"></param>
// /// <returns></returns>
// static public double Mutate(double v, double baseValue)
// {
// double delta = Math.Abs(v-baseValue);
//
// // Sigma=0.1 gives numbers in the range -0.5 to 0.5.
// // Multiply by delta to adjust the mutation's scale in line with magnitude of the value.
// v+= delta*RandLib.gennor(0, 0.1);
// return v;
// }
static public double Mutate(double v, double baseValue, double lowerLimit)
{
double delta = Math.Abs(v - baseValue);
v += delta * RandLib.gennor(0, 0.1);
if (v < lowerLimit)
{
v = lowerLimit + lowerLimit - v;
}
return(v);
}
static public int Mutate(int v, int baseValue)
{
int delta = Math.Abs(v - baseValue);
if (delta <= 10)
{
v += (int)Math.Round(RandLib.gennor(baseValue, 5));
}
else if (delta > 10 && delta <= 100)
{
v += (int)Math.Round((double)delta * RandLib.gennor(0, 1));
}
else // if(delta>100)
{
v += (int)Math.Round((double)delta * RandLib.gennor(0, 0.1));
}
return(v);
}
static public double Mutate(double v, double baseValue, double lowerLimit, double highLimit)
{
double delta = Math.Abs(v - baseValue);
v += delta * RandLib.gennor(0, 0.1);
while (v < lowerLimit || v > highLimit)
{
if (v < lowerLimit)
{
v = lowerLimit + lowerLimit - v;
}
if (v > highLimit)
{
v = highLimit - (v - highLimit);
}
}
return(v);
}