protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2)
{
//note - the inner crossover is called here and the result is converted to a prins representation
//some refactoring should be done here in the future - the crossover operation should be called directly
if (parent1.Length != parent2.Length)
{
return(parent1.Clone() as ZhuEncoding);
}
InnerCrossoverParameter.ActualValue.ParentsParameter.ActualName = ParentsParameter.ActualName;
IAtomicOperation op = this.ExecutionContext.CreateOperation(
InnerCrossoverParameter.ActualValue, this.ExecutionContext.Scope);
op.Operator.Execute((IExecutionContext)op, CancellationToken);
string childName = InnerCrossoverParameter.ActualValue.ChildParameter.ActualName;
if (ExecutionContext.Scope.Variables.ContainsKey(childName))
{
Permutation permutation = ExecutionContext.Scope.Variables[childName].Value as Permutation;
ExecutionContext.Scope.Variables.Remove(childName);
return(new ZhuEncoding(permutation, ProblemInstance));
}
else
{
return(null);
}
}
protected override void Manipulate(IRandom random, ZhuEncoding individual) {
InnerManipulatorParameter.ActualValue.PermutationParameter.ActualName = VRPToursParameter.ActualName;
IAtomicOperation op = this.ExecutionContext.CreateOperation(
InnerManipulatorParameter.ActualValue, this.ExecutionContext.Scope);
op.Operator.Execute((IExecutionContext)op, CancellationToken);
}
private void Swap(ZhuEncoding individual, int city1, int city2) {
int index1 = individual.IndexOf(city1);
int index2 = individual.IndexOf(city2);
int temp = individual[index1];
individual[index1] = individual[index2];
individual[index2] = temp;
}
protected override void Manipulate(IRandom random, ZhuEncoding individual)
{
InnerManipulatorParameter.ActualValue.PermutationParameter.ActualName = VRPToursParameter.ActualName;
IAtomicOperation op = this.ExecutionContext.CreateOperation(
InnerManipulatorParameter.ActualValue, this.ExecutionContext.Scope);
op.Operator.Execute((IExecutionContext)op, CancellationToken);
}
private void Swap(ZhuEncoding individual, int city1, int city2)
{
int index1 = individual.IndexOf(city1);
int index2 = individual.IndexOf(city2);
int temp = individual[index1];
individual[index1] = individual[index2];
individual[index2] = temp;
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2) {
List<int> p1 = new List<int>(parent1);
List<int> p2 = new List<int>(parent2);
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
return child;
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int predecessor = breakPoint - 1;
if (predecessor < 0)
predecessor = predecessor + child.Length;
int parent1Index = i;
int parent2Index = i;
while (i != predecessor) {
if (i == breakPoint) {
child[i] = p1[parent1Index];
p1.Remove(child[i]);
if (parent1Index >= p1.Count)
parent1Index = 0;
p2.Remove(child[i]);
if (parent2Index >= p2.Count)
parent2Index = 0;
}
if (ProblemInstance.GetDistance(
child[i] + 1, p1[parent1Index] + 1, child)
<
ProblemInstance.GetDistance(
child[i] + 1, p2[parent2Index] + 1, child)) {
child[(i + 1) % child.Length] = p1[parent1Index];
} else {
child[(i + 1) % child.Length] = p2[parent2Index];
}
p1.Remove(child[(i + 1) % child.Length]);
if (parent1Index >= p1.Count)
parent1Index = 0;
p2.Remove(child[(i + 1) % child.Length]);
if (parent2Index >= p2.Count)
parent2Index = 0;
i = (i + 1) % child.Length;
}
return child;
}
public override IOperation InstrumentedApply()
{
IVRPEncoding solution = VRPToursParameter.ActualValue;
if (!(solution is ZhuEncoding))
{
VRPToursParameter.ActualValue = ZhuEncoding.ConvertFrom(solution, ProblemInstance);
}
Manipulate(RandomParameter.ActualValue, VRPToursParameter.ActualValue as ZhuEncoding);
return(base.InstrumentedApply());
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2)
{
parent1 = parent1.Clone() as ZhuEncoding;
parent2 = parent2.Clone() as ZhuEncoding;
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
{
return(child);
}
int breakPoint = random.Next(child.Length);
int i = breakPoint;
DoubleArray dueTime = null;
if (ProblemInstance is ITimeWindowedProblemInstance)
{
dueTime = (ProblemInstance as ITimeWindowedProblemInstance).DueTime;
}
do
{
if (i == breakPoint)
{
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
}
else
{
if (
(dueTime != null) &&
(dueTime[parent1[i] + 1] <
dueTime[parent2[i] + 1]))
{
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
}
else
{
child[i] = parent2[i];
Swap(parent1, parent1[i], parent2[i]);
}
}
i = (i + 1) % child.Length;
} while (i != breakPoint);
return(child);
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2)
{
parent1 = parent1.Clone() as ZhuEncoding;
parent2 = parent2.Clone() as ZhuEncoding;
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
{
return(child);
}
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int predecessor = breakPoint - 1;
if (predecessor < 0)
{
predecessor = predecessor + child.Length;
}
while (i != predecessor)
{
if (i == breakPoint)
{
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
}
if (ProblemInstance.GetDistance(
child[i] + 1, parent1[(i + 1) % child.Length] + 1, child)
<
ProblemInstance.GetDistance(
child[i] + 1, parent2[(i + 1) % child.Length] + 1, child))
{
child[(i + 1) % child.Length] = parent1[(i + 1) % child.Length];
Swap(parent2, parent2[(i + 1) % child.Length], parent1[(i + 1) % child.Length]);
}
else
{
child[(i + 1) % child.Length] = parent2[(i + 1) % child.Length];
Swap(parent1, parent1[(i + 1) % child.Length], parent2[(i + 1) % child.Length]);
}
i = (i + 1) % child.Length;
}
return(child);
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2) {
List<int> p1 = new List<int>(parent1);
List<int> p2 = new List<int>(parent2);
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
return child;
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int parent1Index = i;
int parent2Index = i;
DoubleArray dueTime = null;
if (ProblemInstance is ITimeWindowedProblemInstance) {
dueTime = (ProblemInstance as ITimeWindowedProblemInstance).DueTime;
}
do {
if (i == breakPoint) {
child[i] = p1[parent1Index];
} else {
if (dueTime != null &&
(dueTime[p1[parent1Index] + 1] <
dueTime[p2[parent2Index] + 1])) {
child[i] = p1[parent1Index];
} else {
child[i] = p2[parent2Index];
}
}
p1.Remove(child[i]);
if (parent1Index >= p1.Count)
parent1Index = 0;
p2.Remove(child[i]);
if (parent2Index >= p2.Count)
parent2Index = 0;
i = (i + 1) % child.Length;
} while (i != breakPoint);
return child;
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2) {
//note - the inner crossover is called here and the result is converted to a prins representation
//some refactoring should be done here in the future - the crossover operation should be called directly
if (parent1.Length != parent2.Length)
return parent1.Clone() as ZhuEncoding;
InnerCrossoverParameter.ActualValue.ParentsParameter.ActualName = ParentsParameter.ActualName;
IAtomicOperation op = this.ExecutionContext.CreateOperation(
InnerCrossoverParameter.ActualValue, this.ExecutionContext.Scope);
op.Operator.Execute((IExecutionContext)op, CancellationToken);
string childName = InnerCrossoverParameter.ActualValue.ChildParameter.ActualName;
if (ExecutionContext.Scope.Variables.ContainsKey(childName)) {
Permutation permutation = ExecutionContext.Scope.Variables[childName].Value as Permutation;
ExecutionContext.Scope.Variables.Remove(childName);
return new ZhuEncoding(permutation, ProblemInstance);
} else
return null;
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2) {
parent1 = parent1.Clone() as ZhuEncoding;
parent2 = parent2.Clone() as ZhuEncoding;
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
return child;
int breakPoint = random.Next(child.Length);
int i = breakPoint;
DoubleArray dueTime = null;
if (ProblemInstance is ITimeWindowedProblemInstance) {
dueTime = (ProblemInstance as ITimeWindowedProblemInstance).DueTime;
}
do {
if (i == breakPoint) {
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
} else {
if (
(dueTime != null) &&
(dueTime[parent1[i] + 1] <
dueTime[parent2[i] + 1])) {
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
} else {
child[i] = parent2[i];
Swap(parent1, parent1[i], parent2[i]);
}
}
i = (i + 1) % child.Length;
} while (i != breakPoint);
return child;
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2) {
parent1 = parent1.Clone() as ZhuEncoding;
parent2 = parent2.Clone() as ZhuEncoding;
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
return child;
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int predecessor = breakPoint - 1;
if (predecessor < 0)
predecessor = predecessor + child.Length;
while (i != predecessor) {
if (i == breakPoint) {
child[i] = parent1[i];
Swap(parent2, parent2[i], parent1[i]);
}
if (ProblemInstance.GetDistance(
child[i] + 1, parent1[(i + 1) % child.Length] + 1, child)
<
ProblemInstance.GetDistance(
child[i] + 1, parent2[(i + 1) % child.Length] + 1, child)) {
child[(i + 1) % child.Length] = parent1[(i + 1) % child.Length];
Swap(parent2, parent2[(i + 1) % child.Length], parent1[(i + 1) % child.Length]);
} else {
child[(i + 1) % child.Length] = parent2[(i + 1) % child.Length];
Swap(parent1, parent1[(i + 1) % child.Length], parent2[(i + 1) % child.Length]);
}
i = (i + 1) % child.Length;
}
return child;
}
public override IOperation InstrumentedApply()
{
ItemArray <IVRPEncoding> parents = new ItemArray <IVRPEncoding>(ParentsParameter.ActualValue.Length);
for (int i = 0; i < ParentsParameter.ActualValue.Length; i++)
{
IVRPEncoding solution = ParentsParameter.ActualValue[i];
if (!(solution is ZhuEncoding))
{
parents[i] = ZhuEncoding.ConvertFrom(solution, ProblemInstance);
}
else
{
parents[i] = solution;
}
}
ParentsParameter.ActualValue = parents;
ChildParameter.ActualValue =
Crossover(RandomParameter.ActualValue, parents[0] as ZhuEncoding, parents[1] as ZhuEncoding);
return(base.InstrumentedApply());
}
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2)
{
List <int> p1 = new List <int>(parent1);
List <int> p2 = new List <int>(parent2);
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
{
return(child);
}
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int predecessor = breakPoint - 1;
if (predecessor < 0)
{
predecessor = predecessor + child.Length;
}
int parent1Index = i;
int parent2Index = i;
while (i != predecessor)
{
if (i == breakPoint)
{
child[i] = p1[parent1Index];
p1.Remove(child[i]);
if (parent1Index >= p1.Count)
{
parent1Index = 0;
}
p2.Remove(child[i]);
if (parent2Index >= p2.Count)
{
parent2Index = 0;
}
}
if (ProblemInstance.GetDistance(
child[i] + 1, p1[parent1Index] + 1, child)
<
ProblemInstance.GetDistance(
child[i] + 1, p2[parent2Index] + 1, child))
{
child[(i + 1) % child.Length] = p1[parent1Index];
}
else
{
child[(i + 1) % child.Length] = p2[parent2Index];
}
p1.Remove(child[(i + 1) % child.Length]);
if (parent1Index >= p1.Count)
{
parent1Index = 0;
}
p2.Remove(child[(i + 1) % child.Length]);
if (parent2Index >= p2.Count)
{
parent2Index = 0;
}
i = (i + 1) % child.Length;
}
return(child);
}
protected ZhuEncoding(ZhuEncoding original, Cloner cloner)
: base(original, cloner)
{
}
protected abstract ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2);
protected abstract void Manipulate(IRandom random, ZhuEncoding individual);
protected abstract void Manipulate(IRandom random, ZhuEncoding individual);
protected override ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2)
{
List <int> p1 = new List <int>(parent1);
List <int> p2 = new List <int>(parent2);
ZhuEncoding child = parent2.Clone() as ZhuEncoding;
if (parent1.Length != parent2.Length)
{
return(child);
}
int breakPoint = random.Next(child.Length);
int i = breakPoint;
int parent1Index = i;
int parent2Index = i;
DoubleArray dueTime = null;
if (ProblemInstance is ITimeWindowedProblemInstance)
{
dueTime = (ProblemInstance as ITimeWindowedProblemInstance).DueTime;
}
do
{
if (i == breakPoint)
{
child[i] = p1[parent1Index];
}
else
{
if (dueTime != null &&
(dueTime[p1[parent1Index] + 1] <
dueTime[p2[parent2Index] + 1]))
{
child[i] = p1[parent1Index];
}
else
{
child[i] = p2[parent2Index];
}
}
p1.Remove(child[i]);
if (parent1Index >= p1.Count)
{
parent1Index = 0;
}
p2.Remove(child[i]);
if (parent2Index >= p2.Count)
{
parent2Index = 0;
}
i = (i + 1) % child.Length;
} while (i != breakPoint);
return(child);
}
protected ZhuEncoding(ZhuEncoding original, Cloner cloner)
: base(original, cloner) {
}
protected abstract ZhuEncoding Crossover(IRandom random, ZhuEncoding parent1, ZhuEncoding parent2);
