DBpedia domains and URIs: Difference between revisions

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(possible rules and algorithms for DBpedia domains and URIs)
 
(→‎Deviations from these rules: Some international chapters use URIs, not IRIs (more than en and fr))
 
(21 intermediate revisions by the same user not shown)
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* Ontology will always remain at http://dbpedia.org/ontology/
== Long-term goals ==
* Datatypes will always remain at http://dbpedia.org/datatype/ (not de-referencable? wrong server setting?)
 
* All languages use http://xx.dbpedia.org/resource/ and http://xx.dbpedia.org/property/
* '''All''' languages use IRIs, not URIs
* In the long run, English should also use http://en.dbpedia.org, but for the time being, it will use http://dbpedia.org/resource/ and http://dbpedia.org/property/
 
* All languages should use IRIs. For now, English and French will keep URIs.
{| class="wikitable"
* During the extraction, the framework will use http://'''xx'''.dbpedia.org/ '''IRI'''s for '''all''' languages. Different serializers will serializes them differently, according to some rules
|-
** convert en.dbpedia.org to dbpedia.org
! Items
** convert IRIs to URIs for some languages (in subjects, predicates and objects)
! IRI pattern
|-
| Ontology classes and properties
| <nowiki>http://dbpedia.org/ontology/Xyz</nowiki>
|-
| Datatypes
| <nowiki>http://dbpedia.org/datatype/xyz</nowiki>
|-
| 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 [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"
|-
! Items
! deviating IRI pattern
|-
| Resource URI for http://'''en'''.wikipedia.org/wiki/Xyz
| <nowiki>http://dbpedia.org/resource/Xyz</nowiki>
|-
| Properties extracted by generic template extractor from http://'''en'''.wikipedia.org/ pages
| <nowiki>http://dbpedia.org/property/xyz</nowiki>
|}
 
== 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 <nowiki>http://dbpedia.org/resource/Xyz</nowiki> for '''all''' languages and had to 'normalize' the URIs. We will '''not''' do that anymore - we will use <nowiki>http://xx.dbpedia.org/resource/Xyz</nowiki> IRIs.
 
== Implementation details ==
 
During the extraction, the framework will use http://'''xx'''.dbpedia.org/ '''IRI'''s 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)

Latest revision as of 23:37, 23 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)
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