b1 

Bigram Comparator 

Compares two strings using an algorithm based on the Bigram algorithm. This function compares two strings using all combinations of two consecutive characters and returns the total number of combinations that are the same.

b2 

Advanced Bigram Comparator 

Compares two strings allowing for character transpositions. This function is similar to the standard Bigram Comparator (b1).

u 

Advanced Jaro String Comparator 

Compares two strings taking into account uncertainty factors, such as string length, transpositions, and characters in common. This function is based on the Jaro algorithm.

ua 

Winkler-Jaro String Comparator 

Compares two strings similar to the Advanced Jaro String Comparator (u), but increases the agreement weight if the initial characters of each string are exact matches. This function takes into account key punch and visual memory errors. It is based on the Jaro algorithm with variants of Winkler/Lynch and McLaughlin.

uf 

Advanced Jaro Adjusted for First Names 

Based on the generic string comparator (u), this function is designed to specifically weight first name values. The string is analyzed and the weight adjusted based on statistical data. 

ul 

Advanced Jaro Adjusted for Last Names 

Based on the generic string comparator (u), this function is designed to specifically weight last name values. The string is analyzed and the weight adjusted based on statistical data.

un 

Advanced Jaro Adjusted for House Numbers 

Based on the generic string comparator (u), this function is designed to specifically weight house number values. The string is analyzed and the weight adjusted based on statistical data.

us 

Condensed String Comparator 

Compares two strings similar to the Advanced Jaro String Comparator (u), but this function is a custom string comparator that compares two strings taking into account such uncertainty factors as string length, transpositions, key punch errors, and visual memory errors. Unlike the Advanced Jaro String Comparator, this function handles diacritical marks. This function also improves processing speed.

usu 

Unicode String Comparator 

Compares two strings similar to the Condensed String Comparator (us), but this function is based in Unicode to support multiple languages and alphabets. This comparator takes one parameter indicating the language to use.

usus 

Unicode AlphaNumeric Comparator 

Compares two strings similar to the Unicode String Comparator, but this function is designed to match on unique identifiers such as national IDs. This comparator takes one parameter indicating the language to use plus any of the following parameters:

• Field length

• Character types

• Invalid values

ujs 

Advanced Jaro AlphaNumeric Comparator 

Compares two strings similar to the Advanced Jaro String Comparator, but this function is designed to match on unique identifiers such as national IDs. This comparator takes any of the following parameters:

• Field length

• Character types

• Invalid values

c 

Exact Character-to-Character Comparator 

Compares string fields character by character. Each character must match in order for an agreement weight to be assigned.

nI 

Integer Comparator 

Compares integer fields using a relative distance value to determine the match weight. As the difference between the two fields increases, the match weight decreases. Once the difference is beyond the relative distance, a disagreement weight is assigned. This comparator takes two parameters; the first indicates whether to use a relative distance or direct string comparison and the second indicates the relative distance to use.

nR 

Real Number Comparator 

Compares fields containing real numbers using a relative distance value to determine the match weight. As the difference between the two fields increases, the match weight decreases. Once the difference is beyond the relative distance, a disagreement weight is assigned. This comparator takes two parameters; the first indicates whether to use a relative distance or direct string comparison, and the second indicates the relative distance to use.

nS 

Condensed AlphaNumeric SSN Comparator 

Compares social security numbers or other unique identifiers, taking into account any of these parameters:

• Field length

• Character types

• Invalid values

dY 

Date Comparator With Years as Units 

Compares year values using relative distance values prior to and following the given year to determine the match weight. As the difference between the two fields increases, the match weight decreases. Once the difference is beyond the relative distance, a disagreement weight is assigned. The date comparison functions handle Gregorian years. This comparator takes up to three parameters; the first indicates whether to use a relative distance or direct string comparison, and the second and third indicate the relative distance before and after.

dM 

Date Comparator With Months as Units 

Compares the month and year using a relative distance as described above for the year comparison function (dY).

dD 

Date Comparator With Days as Units 

Compares the day, month, and year using a relative distance as described above for the year comparison function (dY).

dH 

Date Comparator With Hours as Units 

Compares the hour, day, month, and year using a relative distance as described above for the year comparison function (dY).

dm 

Date Comparator With Minutes as Units 

Compares the minute, hour, day, month, and year using a relative distance as described above for the year comparison function (dY).

ds 

Date Comparator With Seconds as Units 

Compares the second, minute, hour, day, month, and year using a relative distance as described above for the year comparison function (dY).

p 

Prorated Comparator 

Prorates the disagreement weight for a date or numeric field based on values you specify. Differences greater than the amount you specify receive the full disagreement weight. This comparator takes three parameters indicating the relative distance and the agreement and disagreement ranges.