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Maksym Shostak edited this page Aug 7, 2023 · 3 revisions

The data in the ontology may be represented visually either in a force-directed graph layout, or in a tree structure.

Force-Directed Graph

This representation, WebVOWL, allows for a clear view of the relationships between classes, but does not provide as much detail about each element as the tree view.

  1. Navigate to https://service.tib.eu/webvowl/ in the Chrome or Firefox browser
  2. Hover over "Ontology" in the bottom bar

then

  1. Click the "Select ontology file (max. 5MB)" field
  2. Find the .owl file in the file explorer
  3. Click "Upload"

or

  1. Enter the ontology IRI in the "Enter Ontology IRI". For example, https://haddenindustries.com/ontology/universal/core/20190730 for the 2019-07-30 version of the Core ontology
  2. Click "Visualize"

You can also load an ontology directly via the URL. For example, if you would like to load the 2019-07-30 version of the Core ontology, you can navigate directly to https://service.tib.eu/webvowl/#iri=https://haddenindustries.com/ontology/universal/core/20190730

The view will start off filtered as there are many elements. Sliding the "Filter"/"Degree of collapsing" down to 0 will reveal all the classes and relationships.

There will be a search bar at the bottom, to enable one to easily find classes and relationships - try "Person" as a starting point.

Tree

This representation allows for a clear view of the class inheritance between elements, but will not provide much detail about the relationships between them. It can be seen in the Protégé editor, described below.

  1. Click File/Open
  2. Find the .owl file
  3. Click "Open"

To see all the node and leaf classes at once, click View/Expand all.

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