DBpedia domains and URIs: Difference between revisions

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(→‎Deviations from these rules: Some international chapters use URIs, not IRIs (more than en and fr))
 
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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. :-)
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. :-)


* English and French use URIs, not IRIs. (The main DBpedia release will offer additional datasets with IRIs for download, but the main datasets will use URIs.)
* Some international chapters use URIs, not IRIs. See [http://wiki.dbpedia.org/Internationalization/Chapters 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.


{| class="wikitable"
{| class="wikitable"

Latest revision as of 00:37, 24 May 2012

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)