3. The method of claim 1 , further comprising the step of reclassifying in the computer system the document upon a failure to extract at least the subset of the group of predefined indices from the document.
3. The method of claim 1 , further comprising the step of reclassifying in the computer system the document upon a failure to extract at least the subset of the group of predefined indices from the document. 9. The method of claim 3 , wherein the step of reclassifying the document further comprises the steps of: comparing structure of the document with a structure of each one of a plurality of the ground truth documents; and reclassifying the document as belonging to a classification that includes at least one ground truth document that having a structure that substantially matches a structure of the document.