The minimum threshold is defined in table A and is dependent upon the length of the strings.
The encoded name is known (perhaps incorrectly) as a personal numeric identifier (PNI).
The match rating approach performs well with names containing the letter "y", unlike the original flavor of the NYSIIS algorithm; for example, the surnames "Smith" and "Smyth" are successfully matched.
The following table shows the mapping between the minimum rating and the string lengths.
The table below displays the output of the match rating approach algorithm for some common homophonous names.