Overview of all keyword tags in articles

Topic Maps is a standard for the representation and interchange of knowledge, with an emphasis on the findability of information. The ISO standard is formally known as ISO/IEC 13250:2003. A topic map represents information using: 1) topics, representing any concept, from people, countries, and organizations to software modules, individual files, and events; 2) associations, representing hypergraph relationships between topics; 3) occurrences representing information resources relevant to a particular topic. Topic Maps are similar to concept maps and mind maps in many respects, though only Topic Maps are standardized. Topic Maps are a form of semantic web technology, and some work has been undertaken on interoperability between the W3C's RDF/OWL/SPARQL family of semantic web standards and the ISO's family of Topic Maps standards. (Excerpt from Wikipedia article: Topic maps)