public IHyperCube <double> GetCentroid(IHyperCube <double>[] points)
{
if (points == null)
{
return(null);
}
if (points.Length == 1)
{
return(points[0].Clone( ) as IHyperCube <double>);
}
IHyperCube <double> p = points[0].Clone( ) as IHyperCube <double>;
string[] varNames = p.GetVariableNames();
foreach (string varName in varNames)
{
double val = 0.0;
for (int i = 0; i < points.Length; i++)
{
val += points[i].GetValue(varName);
}
p.SetValue(varName, val / ((double)points.Length));
}
return(p);
}
public IHyperCube <double> GenerateRandomWithinHypercube(IHyperCube <double>[] points)
{
if (points.Length == 0)
{
return(this.GenerateRandom(points[0]));
}
else
{
IHyperCube <double> p = points[0].Clone() as IHyperCube <double>;
string[] varNames = p.GetVariableNames();
for (int i = 0; i < varNames.Length; i++)
{
string v = varNames[i];
double minimum;
double maximum;
GetSmallestIntervalForValues(points, v, out minimum, out maximum);
minimum = Math.Max(minimum, p.GetMinValue(v));
maximum = Math.Min(maximum, p.GetMaxValue(v));
checkFeasibleInterval(minimum, maximum, v);
p.SetValue(varNames[i], GetRandomisedValue(minimum, maximum));
}
return(p);
}
}
public IHyperCube <double> GenerateRandom(IHyperCube <double> point)
{
string[] varNames = point.GetVariableNames( );
IHyperCube <double> result = point.Clone( ) as IHyperCube <double>;
for (int i = 0; i < varNames.Length; i++)
{
string v = varNames[i];
// We take the bounds of the result point, to cater for cascading parameter constraints.
double min = result.GetMinValue(v);
double max = result.GetMaxValue(v);
checkFeasibleInterval(min, max, v);
result.SetValue(varNames[i], GetRandomisedValue(min, max));
}
return(result);
}
private bool tryAdd(string varName, IHyperCube <U> sysConfig, double realStepSize)
{
var min = sysConfig.GetMinValue(varName).ToDouble(null);
var max = sysConfig.GetMaxValue(varName).ToDouble(null);
var val = sysConfig.GetValue(varName).ToDouble(null);
var newval = val + realStepSize;
bool result = true;
if (newval < min)
{
newval = min; result = false;
}
else if (newval > max)
{
newval = max; result = false;
}
sysConfig.SetValue(varName, (U)((IConvertible)newval).ToType(typeof(U), CultureInfo.InvariantCulture));
return(result);
}
