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RabeaMue merged 1 commit into from
Apr 17, 2026
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Add LOD Cloud visualization to underlying concepts episode (closes #12) #86

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7 changes: 7 additions & 0 deletions episodes/02-Wikidata_underlying_concepts.md
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Expand Up @@ -55,6 +55,13 @@ but with only three columns – the subject column, the predicate column, and th

![](fig/Data_Structure_Diagram.jpg){alt='A data structure diagram illustrating a possible connection between a list of triples, represented by a data dictionary, and a graph diagram which visualizes the relationships stipulated by the triples.'}

The scale of linked open data on the web can be visualized in the
[Linked Open Data Cloud](https://lod-cloud.net/), which shows the
connections between hundreds of open datasets. Note that this
visualization is updated regularly, so it will look different over time.

![](https://lod-cloud.net/clouds/lod-cloud.svg){alt='Visualization of the Linked Open Data Cloud showing connections between hundreds of open datasets'}

## 2\.2 Conceptual foundations: RDF and Triples

The RDF defines a conceptual data model that is based on the idea of
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