Knowledge management and the Semantic Web: From scenario to technology

A new vision of the Semnatic web as a knowledge management environment introduces new requirements, including the ability to semiautomatically learn ontologies and extract metadata. Visualtization techniques can help users to understand the relationships in an ontology and in the associated metadata. Researchers have developed tools for creating, populating, and managing ontologies based on the emerging ontology languages. The W3C has developed a framework, known as resource description framework (RDF), required for standardizing the languages necessary for a global Semantic Web. It is suggested that an ontology management infrastructure is essential to manage and reason with large ontology and entity database for practical applications.