Exploring the Ontology

Tools you can use to explore the DBpedia ontology:

• Class Hierarchy View: overview of the ontology's current shape
• Click on <class> to see all props applicable to it (rdfs:domain is <class> or a superclass thereof).
  • Eg http://mappings.dbpedia.org/server/ontology/classes/Place
• Search for props that explicitly connect to a class (rdfs:range is that <class> but no superclasses):
  • "range <class>" (note the quotes!)
  • Eg http://mappings.dbpedia.org/index.php?search="range+place"
• Search for class use in templates
  • "maptoclass <class>" (note the quotes!)
  • eg http://mappings.dbpedia.org/index.php?search="maptoclass+place"
• Search for property use in templates
  • "ontologyproperty <prop>" (note the quotes!)
  • eg http://mappings.dbpedia.org/index.php?search="ontologyproperty+location"
• Query the ontology as deployed (http://dbpedia.org/sparql). But it's already outdated (last update Aug 2014). Eg

     SELECT DISTINCT * {?prop rdfs:domain|rdfs:range dbo:Place}

Browser Shortcuts

You could also make search shortcuts for your browser. On Chrome go to [chrome://settings/searchEngines] and make searches like:

• Match anything. You can use a wildcard at the end

db -> http://mappings.dbpedia.org/index.php?search=%s

• Text match in Classes only

dbc -> http://mappings.dbpedia.org/index.php?ns200=1&advanced=1&search=%s

• Text match in Properties only

dbp -> http://mappings.dbpedia.org/index.php?ns202=1&advanced=1&search=%s

• Class use in tempates

dbcu -> "maptoclass+%s" http://mappings.dbpedia.org/index.php?search="maptoclass+%s"

• Property use in templates

dbpu -> "ontologyproperty+%s" http://mappings.dbpedia.org/index.php?search="ontologyproperty+%s"