Advanced Jaro AlphaNumeric Comparator (ujs)
The Advanced Jaro AlphaNumeric Comparator is a custom version of a generic string comparison function. It is based on the Advanced Jaro String Comparator, u, but is designed specifically for matching on national identifier, such as social security numbers. This function takes into account such uncertainty factors as string length, transpositions, key punch errors, and visual memory errors. It can also take into consideration field length, allowed character types, and invalid values. This comparison function takes the parameters described in the following table.
Table 4 ujs Comparison Function Parameters|
Parameter |
Description |
|---|---|
|
An optional parameter that takes the length of the field value into account. If a fixed length is specified, the match engine considers any field of a different length to be a non-match. Specify any integer smaller than the value specified for the field size in the matching configuration file (for more information, see Matching Rules Section). |
|
|
recType |
An indicator of whether the field must be all numeric. Specify “nu” for numeric only, or specify “an” to allow alphanumeric characters. The match engine considers any fields containing characters that are not allowed to be a non-match. |
|
ssnList |
A list of invalid characters for the field. If you specify a character, the match engine considers fields that consist of only that character to be a non-match. For example, if you specify “0”, then an SSN field cannot contain all zeros. Specify as many alphanumeric characters as needed, separated by a space. |
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