Knowledge portals provide views onto domain-specific information on the World Wide Web, thus facilitating their users to find relevant, domain-specific information. The construction of intelligent access and the provisioning of information to knowledge portals, however, it requires extensive manual editing and maintenance by the knowledge portal providers. In order to diminish these efforts using Ontology as a conceptual backbone for providing, accessing and structuring information in a comprehensive approach for building and maintaining knowledge portals. There are one research and one commercial case study that show how our approach is used in practice.
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