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249. How is the Score calculated?


Sanctions List Search will first look for potential matches based on the first letter of  input search terms and by checking for matches at least 50% or more similar based on edit distance (edit distance is the minimum number of operations required to transform the input string of characters into the string that it is being compared to on the list). Sanctions List Search then uses two matching logic algorithms, and two matching logic techniques to calculate the score. The two algorithms are Jaro-Winkler, a string difference algorithm, and Soundex, a phonetic algorithm. The first technique involves using the Jaro-Winkler algorithm to compare the entire name string entered against full name strings of potential match entries on OFAC's sanctions lists. The second technique involves splitting the name string entered into multiple name parts (for example, John Doe would be split into two name parts). Each name part is then compared to name parts on all of OFAC's sanctions lists using the Jaro-Winkler and Soundex algorithms. The search calculates a score for each name part entered, and a composite score for all name parts entered. Sanctions List Search uses both techniques each time the search is run and returns the higher of the two scores in the Score column.

Date Released
April 28, 2021