16. The method of claim 14 , wherein training the first MLA classifier further comprises: determining a confidence parameter associated with an output of the first MLA classifier.
18. The method of claim 16 , wherein training the first MLA classifier further comprises: analyzing the confidence parameter for a document type, and in response to the confidence parameter being above a first pre-determined threshold and a difference between the confidence parameter and a next-document-type confidence parameter being above a second pre-determined threshold, determining that the document type is one of confidently predictable document types by the first MLA classifier.