4. The method of claim 1 , wherein the step of evaluating a probabilistic approximation further comprises calculating a posterior probability over a limited set of character string features.
4. The method of claim 1 , wherein the step of evaluating a probabilistic approximation further comprises calculating a posterior probability over a limited set of character string features. 5. The method of claim 4 , wherein the limited set of character string features include a last-word feature, a digit-blurring feature, a words feature, a full-string feature, and an address-line feature.