public double evaluate(Vector x) {
double sum = 0.0;
for (int i = 0; i < getDimension(); ++i) {
sum += Math.floor(x.getReal(i) + 0.5) * Math.floor(x.getReal(i) + 0.5);
}
return sum;
}
public double evaluate(Vector input) {
double sum = 0.0;
for (int i = 0; i < getDimension() - 1; ++i) {
double x = input.getReal(i);
double y = input.getReal(i + 1);
sum +=
x * x
+ 2 * y * y
- 0.3 * Math.cos(3 * Math.PI * x)
- 0.4 * Math.cos(4 * Math.PI * y)
+ 0.7;
}
return sum;
}
public double evaluate(Vector x) {
return (x.getReal(0) * x.getReal(0) + x.getReal(1) * x.getReal(1));
}
