1. A text analysis method for finding acronyms of a reference term in a text, comprising: providing a list of reference terms; breaking down text and a list of reference terms into tokens; generating at least one candidate in the text for mapping to at least one of the reference terms; comparing characters of the candidate to characters of the reference term according to one or more mapping rules; generating a confidence value of the mapping based on said comparison of characters; and ranking candidates according to their confidence value.