/**
* Creates a new instance of problem CEC2009_UF6.
*
* @param numberOfVariables Number of variables.
* @param solutionType The solution type must "Real" or "BinaryReal".
*/
public CEC2009_UF6(String solutionType, Integer numberOfVariables, int N, double epsilon)
throws ClassNotFoundException {
numberOfVariables_ = numberOfVariables.intValue();
numberOfObjectives_ = 2;
numberOfConstraints_ = 0;
problemName_ = "CEC2009_UF6";
N_ = N;
epsilon_ = epsilon;
upperLimit_ = new double[numberOfVariables_];
lowerLimit_ = new double[numberOfVariables_];
lowerLimit_[0] = 0.0;
upperLimit_[0] = 1.0;
for (int var = 1; var < numberOfVariables_; var++) {
lowerLimit_[var] = -1.0;
upperLimit_[var] = 1.0;
} // for
if (solutionType.compareTo("BinaryReal") == 0) solutionType_ = new BinaryRealSolutionType(this);
else if (solutionType.compareTo("Real") == 0) solutionType_ = new RealSolutionType(this);
else {
System.out.println("Error: solution type " + solutionType + " invalid");
System.exit(-1);
}
} // CEC2009_UF6
public boolean[] randomProduct() {
boolean[] prod = new boolean[ProductLineProblem.numFeatures];
for (int i = 0; i < prod.length; i++) {
prod[i] = r.nextBoolean();
}
int rand = r.nextInt(3);
try {
IOrder order;
if (rand == 0) {
order =
new RandomWalkDecorator(new VarOrderHeap(new NegativeLiteralSelectionStrategy()), 1);
} else if (rand == 1) {
order =
new RandomWalkDecorator(new VarOrderHeap(new PositiveLiteralSelectionStrategy()), 1);
} else {
order = new RandomWalkDecorator(new VarOrderHeap(new RandomLiteralSelectionStrategy()), 1);
}
// dimacsSolver.reset();
ISolver dimacsSolver2 = SolverFactory.instance().createSolverByName("MiniSAT");
dimacsSolver2.setTimeout(SATtimeout);
DimacsReader dr = new DimacsReader(dimacsSolver2);
dr.parseInstance(new FileReader(ProductLineProblem.fm));
((Solver) dimacsSolver2).setOrder(order);
ISolver solverIterator = new ModelIterator(dimacsSolver2);
solverIterator.setTimeoutMs(iteratorTimeout);
if (solverIterator.isSatisfiable()) {
int[] i = solverIterator.findModel();
for (int j = 0; j < i.length; j++) {
int feat = i[j];
int posFeat = feat > 0 ? feat : -feat;
if (posFeat > 0) {
prod[posFeat - 1] = feat > 0;
}
// else
// {
// prod[nFeat-1] = r.nextBoolean();
// }
}
}
// solverIterator = null;
} catch (Exception e) {
e.printStackTrace();
System.exit(0);
}
return prod;
}