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Topic map
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{{Short description|Knowledge organization system}} {{Use dmy dates|date=October 2017}} [[Image:TopicMapKeyConcepts2.PNG|thumb]] {{InfoMaps}} A '''topic map''' is a standard for the [[knowledge representation|representation]] and [[knowledge transfer|interchange]] of knowledge, with an emphasis on the [[findability]] of information. Topic maps were originally developed in the late 1990s as a way to represent [[back-of-the-book index]] structures so that multiple indexes from different sources could be merged. However, the developers quickly realized that with a little additional generalization, they could create a [[Metamodeling|meta-model]] with potentially far wider application.{{explain|reason=What was that meta-model? Can we add a reference to a source about it?|date=May 2025}} The [[International Organization for Standardization|ISO]]/[[International Electrotechnical Commission|IEC]] standard is formally known as '''ISO/IEC 13250:2003'''. 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 map]]s and [[mind map]]s in many respects, though only topic maps are ISO standards. Topic maps are a form of [[semantic web]] technology similar to RDF.
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