DBpedia domains and URIs
Long-term goals
- All languages use IRIs, not URIs
| Items | IRI pattern |
|---|---|
| Ontology classes and properties | http://dbpedia.org/ontology/Xyz |
| Datatypes | http://dbpedia.org/datatype/xyz |
| Resource IRI for http://xx.wikipedia.org/wiki/Xyz | http://xx.dbpedia.org/resource/Xyz |
| Properties extracted by generic template extractor from http://xx.wikipedia.org/ pages | http://xx.dbpedia.org/property/xyz |
Deviations from these rules
In the past, we did not follow these rules. For backwards compatibility, we will allow some deviations for a while. Might be a long while. :-)
- Some international chapters use URIs, not IRIs. See the list of DBpedia chapters for details. The main DBpedia release will offer additional datasets with IRIs for download, but the main datasets will use URIs.
| Items | deviating IRI pattern |
|---|---|
| Resource URI for http://en.wikipedia.org/wiki/Xyz | http://dbpedia.org/resource/Xyz |
| Properties extracted by generic template extractor from http://en.wikipedia.org/ pages | http://dbpedia.org/property/xyz |
Notes
The main DBpedia release and a DBpedia chapter must use the same syntax for equivalent IRIs.
We used to map page titles from non-English Wikipedias to IRIs using the inter-language link to the English Wikipedia. If there was no such inter-language link, we did not extract any data from the non-English page. That was because we used URIs like http://dbpedia.org/resource/Xyz for all languages and had to 'normalize' the URIs. We will not do that anymore - we will use http://xx.dbpedia.org/resource/Xyz IRIs.
Implementation details
During the extraction, the framework will use http://xx.dbpedia.org/ IRIs for all languages, even English. Different serializers will serialize them differently, according to some rules, for example:
- convert en.dbpedia.org to dbpedia.org
- convert IRIs to URIs for some languages (in subjects, predicates and objects)
