/**
* Evaluates a solution
*
* @param solution The solution to evaluate
* @throws JMException
*/
public void evaluate(Solution solution) throws JMException {
Variable[] variable = solution.getDecisionVariables();
double[] f = new double[numberOfObjectives_];
f[0] = variable[0].getValue();
f[1] = variable[1].getValue();
solution.setObjective(0, f[0]);
solution.setObjective(1, f[1]);
} // evaluate
/**
* Evaluates a solution
*
* @param solution The solution to evaluate
* @throws JMException
*/
public void evaluate(Solution solution) throws JMException {
Variable[] gen = solution.getDecisionVariables();
Vector<Double> x = new Vector<Double>(numberOfVariables_);
Vector<Double> y = new Vector<Double>(numberOfObjectives_);
for (int i = 0; i < numberOfVariables_; i++) {
x.addElement(gen[i].getValue());
y.addElement(0.0);
} // for
LZ09_.objective(x, y);
for (int i = 0; i < numberOfObjectives_; i++) solution.setObjective(i, y.get(i));
} // evaluate
/**
* Evaluates the constraint overhead of a solution
*
* @param solution The solution
* @throws JMException
*/
public void evaluateConstraints(Solution solution) throws JMException {
double[] constraint = new double[this.getNumberOfConstraints()];
double x1 = solution.getDecisionVariables()[0].getValue();
double x2 = solution.getDecisionVariables()[1].getValue();
constraint[0] = (x1 * x1 + x2 * x2 - 1.0 - 0.1 * Math.cos(16.0 * Math.atan(x1 / x2)));
constraint[1] = -2.0 * ((x1 - 0.5) * (x1 - 0.5) + (x2 - 0.5) * (x2 - 0.5) - 0.5);
int number = 0;
double total = 0.0;
for (int i = 0; i < this.getNumberOfConstraints(); i++)
if (constraint[i] < 0.0) {
number++;
total += constraint[i];
}
solution.setOverallConstraintViolation(total);
solution.setNumberOfViolatedConstraint(number);
} // evaluateConstraints