private static double correlateStrings(String s1, String s2, boolean truncate) {
int minLength = Math.min(s1.length(), s2.length());
if (truncate && (minLength == 1)) {
return s1.charAt(0) == s2.charAt(0) ? 1.0 : 0.0;
} else if ((s1.length() == 1) && (s2.length() == 1)) {
return s1.equals(s2) ? 1.0 : 0.0;
} else if (minLength == 0) {
return s1.isEmpty() && s2.isEmpty() ? 1.0 : 0;
}
// Convert strings to numbers and harmonize length in a method dependent on truncate:
if (truncate) {
// Harmonize length by truncation:
if (s1.length() > minLength) {
s1 = s1.substring(0, minLength);
}
if (s2.length() > minLength) {
s2 = s2.substring(0, minLength);
}
}
double[] n1 = DuplicateCheck.numberizeString(s1);
double[] n2 = DuplicateCheck.numberizeString(s2);
// If truncation is disabled, harmonize length by interpolation:
if (!truncate) {
if (n1.length < n2.length) {
n1 = DuplicateCheck.stretchArray(n1, n2.length);
} else if (n2.length < n1.length) {
n2 = DuplicateCheck.stretchArray(n2, n1.length);
}
}
return DuplicateCheck.corrCoef(n1, n2);
}
