rdf-i18n

Translations of classical RDF vocabularies

Purpose

I know that for W3C recommandations, there is always a link to translations; see also: http://www.w3.org/2003/03/Translations/

but this is only for the W3C recommendations, and only for "external" documentation, not RDF ontology declarations.

For those vocabularies and ontologies that have only rdfs:label and rdfs:comment in english (internal documentation), we add translations in other languages.

You may ask: "why bother do this?". I see at least 2 use cases:

• for input form and display generated from the vocabulary, I18N labels and tooltips are necessary; see project semantic_forms
• for faceted search, I18N labels are useful

We provide just Turtle files. But there may be scripts to provide other formats.

NOTE: some vocabularies already have I18N information, like DOAP which has internal documentation in english, french, czech, japanese, and spanish.

Content

The files for each vocabulary are located in a directory named after the common prefix for this vocabulary. A convenient reference for prefixes is http://prefix.cc . For example the file for french canadian for vocabulary SIOC will be in:

sioc/sioc.fr_CA.ttl

And (example of URL pattern) the actual Turtle can be downloaded (alas without the right HTTP content type) at this URL: http://github.com/jmvanel/rdf-i18n/raw/master/sioc/sioc.fr_CA.ttl

Currently we have: http://github.com/jmvanel/rdf-i18n/raw/master/foaf/foaf.fr.ttl

Modus operandi

It is possible to use Google translate as a starting point. When doing this, it's better to use the N-triples syntax; the Google translator would spoil the abbreviated URI's in Turtle.

I you want to contribute with a translation, but don't have the tooling, I can pre-populate the project with a N-triples document in english; currently there is:

• foaf/foaf.en.nt
• sioc
• dc (Dublin Core)
• rdf, rdfs
• skos
• wordnet

To generate such a file, one way to do, with CWM, for example for SIOC:

# look for the URL corresponding to the prefix sioc in prefix.cc
cwm http://rdfs.org/sioc/ns --n3=prs > sioc.nt
mkdir sioc
egrep 'rdf-schema#label|rdf-schema#comment|terms/description' sioc.nt > sioc/sioc.en.nt
rm sioc.nt

To generate such a file, another way to do, with rapper, for example for Darwin-Core:

	rapper -i rdfxml http://purl.org/dsw/dsw.owl -o ntriples > dsw.nt
	mkdir dsw
	egrep 'rdf-schema#label|rdf-schema#comment|terms/description' dsw.nt > dsw/dsw.en.nt

To generate such a file, another way to do, with EulerGUI + CWM, for example for SIOC:

eulergui sioc: --query filter_label_and_comment.n3
# enter in CWM arguments: --n3=prs
# run CWM with CWM button on top left
# save the content of bottom pannel

The query to filter rdfs:label and rdfs:comment :

@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
{ ?S 
	rdfs:label ?L ;
	rdfs:comment ?C .
} => { ?S 
	rdfs:label ?L ;
	rdfs:comment ?C .
} .

After using Google translate, fix manually tranlation errors, pass his script, and check N-triples syntax.

sed -s '1,$s/@en/@fr/' vocab.fr.nt =

List of I18N translations in Turtle

A related question is: are there established RDF predicates to say :

A translation document for FOAF vocabulary in French is http://github.com/jmvanel/rdf-i18n/raw/master/foaf/foaf.fr.ttl

Indeed there is one vocabulary, called lingvoj (http://www.lingvoj.org/ontology).

And each new translation should be added by the translator person to this document using the lingvoj vocabulary : translations_list.ttl

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• semantic_forms

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