4. The method of claim 3 , wherein the step of reclassifying the document further comprises the steps of: organizing a plurality of terms in the document into a number of language groups, each of the language groups being defined by a characteristic of a native language of the document, wherein at least one of the terms is considered to be a putative index; searching indices associated with the ground truth documents for occurrences of the putative index; and reclassifying the document as belonging to a classification that includes at least one ground truth document that having at least one occurrence of the putative index.
4. The method of claim 3 , wherein the step of reclassifying the document further comprises the steps of: organizing a plurality of terms in the document into a number of language groups, each of the language groups being defined by a characteristic of a native language of the document, wherein at least one of the terms is considered to be a putative index; searching indices associated with the ground truth documents for occurrences of the putative index; and reclassifying the document as belonging to a classification that includes at least one ground truth document that having at least one occurrence of the putative index. 6. The method of claim 4 , wherein at least one of language groups is defined by whether a term appears in a native language dictionary.