14. The computer implemented system of claim 11 , wherein said spend data clustering engine comprises a matching engine, wherein said matching engine performs matching of the word tokens, and calculates a matching score by using string matching criteria.
14. The computer implemented system of claim 11 , wherein said spend data clustering engine comprises a matching engine, wherein said matching engine performs matching of the word tokens, and calculates a matching score by using string matching criteria. 15. The computer implemented system of claim 14 , wherein said string matching criteria comprises lengths of the word tokens in item descriptions, Levenshtein distance score, and prefix matching score.