Formal Taxonomies for the U.S. Government

XML.com: Formal Taxonomies for the U.S. Government: "Taxonomies have long played a central role in both medical and library science for the classification of medical terms and books. Recently, the U.S. federal government's Office of Management and Budget (OMB) released the Federal Enterprise Architecture (FEA) Data Reference Model (DRM). The FEA DRM specifies three abstract layers of an organization's information: business context, information exchange, and data element description. Business context specifies the use of a taxonomy to categorize government information. One definition of a taxonomy is 'a scheme that partitions a body of knowledge and defines the relationships among the pieces. It is used for classifying and understanding the body of knowledge.'"