- From: Jakob Voss <jakob.voss@gbv.de>
- Date: Wed, 12 Jan 2011 17:43:15 +0100
- CC: "public-esw-thes@w3.org" <public-esw-thes@w3.org>
Hi Ford, You wrote: > The solution you proposed - defining skos:uniquePrefLabel > rdfs:subPropertyOf skos:prefLabel - might result in an integrity > violation after inferencing. Based on the example you provided, and > please correct me if I'm wrong, you could end up with two > same-language skos:prefLabels for the same resource after > inferencing. This would violate the skos:prefLabel integrity > condition that "a resource has no more than one value of > skos:prefLabel per language tag."[1] You are right - if it violates the condition, the solution is not a valid solution. > The only other thing I could think to do would be to add a "no > linguistic content" language designation ("zxx") to the second, > "unique", to-be-used-with-the-KOS-as-thesaurus skos:prefLabel > property (I'm proposing this, but can't say that I'm sold on the idea > myself). This would permit the two labels to peaceably coexist as > skos:prefLabel properties. At best, this keeps the information in > the skos namespace, but still fails to lend any meaningful > distinction to your "unique" prefLabel. You'd still have to define a > system rule that says "when using the KOS as a thesaurus, look for > the 'zxx' prefLabel," but this solution would unambiguously identify > a concept within a KOS and its applications. Yes, 'zxx' is not very intuitive. At the moment I think that the best solution is to use skos:prefLabel unique, but some concept schemes will not have preferred labels, so there is a skos:Concept without this property. Instead you could add rdfs:label, but then the application does not know which rdfs:label to use as the main heading. As dc:title is also a sub-property of rdfs:label, we could use dc:title instead. But I am not comfortable with creating unique labels, if the scheme just does not have unique labels. SKOS applications should be able to deal with concepts that have no skos:prefLabel and with schemes that have non-unique skos:prefLabels. Jakob -- Jakob Voß <jakob.voss@gbv.de>, skype: nichtich Verbundzentrale des GBV (VZG) / Common Library Network Platz der Goettinger Sieben 1, 37073 Göttingen, Germany +49 (0)551 39-10242, http://www.gbv.de
Received on Wednesday, 12 January 2011 16:44:02 UTC