Create skos:prefLabel for every rdfs:label

Question

I have a RDF file that contains resources with rdfs:label already assigned to them. What I am trying to achieve is to add additional skos:prefLabel for every rdfs:label instance in the document.

I was trying to use CONSTRUCT to do it, but the rdfs:label get replaced by skos:prefLabel, which is wrong because I want to add the skos:prefLabel in addition to the existing rdfs:label.

Hopefully someone can help on this.

Thanks.

I am using TopBraid Composer, And please bear with me I am noob in SPARQL and all the semantic web technologies.

I was trying to make the below query work:

CONSTRUCT { 
    ?c a rdfs:label .
    ?c skos:prefLabel ?pl . 
} 
WHERE { 
    ?c rdfs:subClassOf ?superclass . 
    BIND(skos:prefLabel as ?pl) . 
}

Accepted Answer

4

First, it seems that you have the concepts mixed up a little. It looks like you are trying to change types fo your labels. For one thing, rdfs:label is a property and not a class so placing it as object next to rdf:type (which a stands for) makes little sense. Other than that you don't reference the actual labelled resources in your WHERE graph pattern as I have expected to see.

From your description I understand that you want to find all resources labelled with rdfs:label and add similar triples with skos:prefLabel instead. Provided that your file contains triples like

ex:someResource rdfs:label "the label"

You should be using a CONSTRUCT like

CONSTRUCT
{
   ?res skos:prefLabel ?label
}
WHERE
{
   ?res rdfs:label ?label
}

and then combine the resulting graph with what you already have.

link

answered 05 Nov '12, 16:44

Tomasz Plusk...
1.1k●1●8
accept rate: 38%

edited 06 Nov '12, 01:15

1

I don't use TBC, and I may be completeyl wrong, but if SKOS is imported will it infer that all skos:prefLabel s are rdfs:label s (as rdfs:label is a super property of skos:prefLabel - http://www.w3.org/2009/08/skos-reference/skos.html#prefLabel)?

Also check out @scotthenniger 's response here - http://answers.semanticweb.com/questions/11115/rdfslabel-vs-skospreflabel-vs-dctitle

(05 Nov '12, 17:10) Sweet Burlap

@Tomasz, there is an extra ? before the rdfs:label in your query.

(06 Nov '12, 00:01) Holger Knubl...

@Holger Thanks, I have fixed that.

(06 Nov '12, 03:47) Tomasz Plusk...

Answer 2

0

Thanks so much Tomasz,

Your suggestion helped me to do what I was looking for with the following query:

CONSTRUCT
{
    ?res skos:prefLabel ?label .
    ?c rdfs:label ?label .
}
WHERE
{
   ?res rdfs:label ?label .
   ?c rdfs:label ?label .
}

link

answered 06 Nov '12, 14:48

OntoLearner
62●1●6
accept rate: 0%

4

That is precisely the same as:

CONSTRUCT
{
    ?c skos:prefLabel ?label .
    ?c rdfs:label ?label .
}
WHERE
{
    ?c rdfs:label ?label .
}

Except this query will probably be faster.

(06 Nov '12, 15:08) Signified ♦

Thanks for the suggestion Signified.

(07 Nov '12, 09:16) OntoLearner

Create skos:prefLabel for every rdfs:label

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