public override DimensionSet <BinaryRepresentation> PickImprovement(
IEnumerable <DimensionSet <BinaryRepresentation> > neighbourhood,
DimensionalFunction function,
double currentMinimum)
{
return(neighbourhood.FirstOrDefault(n => function.GetValue(n, new BinarySetToDoubleSetConverter()) < currentMinimum));
}
public SimulatedAnnealingMinimumBuilder WithFunction(DimensionalFunction function)
{
this.function =
function ?? throw new ArgumentNullException(
"The simulated annealing minimum builder needs a non-null function to work with!");
return(this);
}
public override DimensionSet <double> PickImprovement(
IEnumerable <DimensionSet <double> > neighbourhood,
DimensionalFunction function,
double currentMinimum)
{
return(neighbourhood.FirstOrDefault(n => function.GetValue(n) < currentMinimum));
}
public override DimensionSet <double> Convert(Chromosome source, DimensionalFunction function)
{
var doubles =
source.Representations.Select((x, dimension) =>
BinaryHelper.DecodeBinary(x, function.GetDomain().GetDefinitionForDimension(dimension + 1), function.Precision));
return(new DimensionSet <double>(doubles));
}
public override DimensionSet <BinaryRepresentation> PickImprovement(
IEnumerable <DimensionSet <BinaryRepresentation> > neighbourhood,
DimensionalFunction function,
double currentMinimum)
{
DimensionSet <BinaryRepresentation> bestImprovement = null;
foreach (var neighbour in neighbourhood)
{
var value = function.GetValue(neighbour, new BinarySetToDoubleSetConverter());
if (currentMinimum <= value)
{
continue;
}
currentMinimum = value;
bestImprovement = neighbour;
}
return(bestImprovement);
}
public override DimensionSet <double> PickImprovement(
IEnumerable <DimensionSet <double> > neighbourhood,
DimensionalFunction function,
double currentMinimum)
{
DimensionSet <double> bestImprovement = null;
foreach (var neighbour in neighbourhood)
{
var value = function.GetValue(neighbour);
if (currentMinimum <= value)
{
continue;
}
currentMinimum = value;
bestImprovement = neighbour;
}
return(bestImprovement);
}
public GeneticMinimumBuilder WithOptimizingFunction(DimensionalFunction function)
{
this.optimizingFunction = function ?? throw new InvalidOperationException("Function should not be null!");
return(this);
}
public abstract DimensionSet <double> Convert(TSource source, DimensionalFunction function);
public abstract DimensionSet <BinaryRepresentation> PickImprovement(
IEnumerable <DimensionSet <BinaryRepresentation> > neighbourhood,
DimensionalFunction function,
double currentMinimum);
