Topic map

A topic map represents information using

• topics, representing any concept, from people, countries, and organizations to software modules, individual files, and events,
• associations, representing hypergraph relationships between topics, and
• 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 ISO standards. Topic maps are a form of semantic web technology similar to RDF.

The semantic expressive power of Topic Maps is, in many ways, equivalent to that of RDF, – a commercial proprietary topic maps editor

• Lutz Maicher and Jack Park: Charting the Topic Maps Research and Applications Landscape, Springer, Passin, Thomas B. (2004). Explorer's Guide to the Semantic Web. Manning Publications. ISBN 1-932394-20-6.

• Information portal about Topic Maps
• An Introduction to Topic Maps at Microsoft Docs
• Topic Maps Lab