1. A method for mapping a taxonomy to at least one other taxonomy, the taxonomies including concepts for organizing information, the method comprising: reviewing the taxonomy; finding an expanded concept node that is instantiated disproportionately in the document glosses of an unmapped node of the taxonomy; determining if the expanded concept node is instantiated in documents not classified at a leaf node in the at least one other taxonomy; and creating a new node with the unexpanded concept and place the relevant documents under the new node if the expanded concept node is instantiated in documents not classified at a leaf node.