12. The computer program product of claim 11 , the program instructions further comprising: program instructions to determine a confidence measure associated with one or more concepts included in the set of evidences, wherein is used as a factor; and program instructions to determine whether to add or remove a given concept included in the first ontology or the residual ontology based at least in part, on the confidence measure associated with that concept.
12. The computer program product of claim 11 , the program instructions further comprising: program instructions to determine a confidence measure associated with one or more concepts included in the set of evidences, wherein is used as a factor; and program instructions to determine whether to add or remove a given concept included in the first ontology or the residual ontology based at least in part, on the confidence measure associated with that concept. 13. The computer program product of claim 12 , wherein the set of evidences are filtered based on a confidence threshold such that only evidences from the set of evidences that are above the confidence threshold are stored in either the first ontology or to the residual ontology.