15. The method of claim 13 , further comprising: presenting one or more additional documents from the set of multiple documents to the user for user classification if the calculated confidence measure does not meet a threshold value.
15. The method of claim 13 , further comprising: presenting one or more additional documents from the set of multiple documents to the user for user classification if the calculated confidence measure does not meet a threshold value. 16. The method of claim 15 , wherein said threshold value is determined by the user.