public static Vector calculate_f(double D, Vector x, Vector h, Vector S) {
Preconditions.checkArgument(D > 0.0);
Preconditions.checkArgument(Misc.vector_in_01(x));
Preconditions.checkArgument(Misc.vector_in_01(h));
Preconditions.checkArgument(x.size() == h.size());
Preconditions.checkArgument(h.size() == S.size());
Vector.Builder result = Vector.newBuilder();
for (int i = 0; i < h.size(); i++) {
Preconditions.checkArgument(S.doubleValueOf(i) > 0.0);
result.add(D * x.doubleValueOf(x.size() - 1) + S.doubleValueOf(i) * h.doubleValueOf(i));
}
return result.build();
}
public static Vector calculate_x(Vector t_p, Vector A) {
Preconditions.checkArgument(Misc.vector_in_01(t_p));
Preconditions.checkArgument(!t_p.isEmpty());
Preconditions.checkArgument(A.size() == t_p.size() - 1);
Vector.Builder result = Vector.newBuilder();
for (int i = 0; i < t_p.size() - 1; i++) {
Preconditions.checkArgument(A.doubleValueOf(i) == 0 || A.doubleValueOf(i) == 1);
double tmp1 = Math.max(t_p.doubleValueOf(t_p.size() - 1), A.doubleValueOf(i));
result.add(tmp1 * (t_p.doubleValueOf(i) - 0.5) + 0.5);
}
result.add(t_p.doubleValueOf(t_p.size() - 1));
return result.build();
}