Patent ID: 7840521

Claim:
A computer-based method for supervised classification of digital documents comprising: automatically calculating, within a computer, a category score for each of a plurality of categories for which a digital document may be classified, wherein the category score is based on a plurality of words in the digital document; determining a plurality of threshold scores for each of said plurality of categories, wherein the threshold scores define a plurality of category relevance types; automatically determining a first highest category score and a second highest category score for the digital document; applying a single-category selection rule to the first highest category score and the second highest category score to determine a category pattern for the digital document; automatically determining whether human examination is required to select the category for the digital document based upon the category pattern of the digital document; in response to determining that human examination is not required to select the category for the digital document, automatically selecting the category with the first highest score; and in response to determining that human examination is required to select the category for the digital document, selecting either the category with the first highest score or second highest score based on human examination.