- From: Vladimir Alexiev <vladimir.alexiev@ontotext.com>
- Date: Wed, 13 Nov 2013 09:46:18 +0100
- To: <public-esw-thes@w3.org>
- Cc: "'Stella Dextre Clarke'" <stella@lukehouse.org>, "'Marcia Zeng'" <mzeng@kent.edu>, "'Jutta Lindenthal'" <jutta.lindenthal@gmail.com>, "'Leonard Will'" <l.will@willpowerinfo.co.uk>
(Note: I'm removing Antoine and Johan from To just to avoid duplicates, since I know they are subscribed to this mlist) > > - broader is non-transitive (it’s a step relation), so it cant have transitive subprops. > This is wrong. A non-transitive property can have transitive sub-properties, even if this property is meant to represent "steps" Formally I'm wrong but practically I'm right. Applications expect broader to be the step relation. If it contains transitive sub-relations, this will wreak havoc. > > so for now let’s just define broaderGeneric, broaderPartitive and broaderInstantive as subprops of skos:broader, and leave it at that > I agree with the focus on the simple, non-transitive definition for BG, BP and BI. > But I think we should let the ISO WG (with the input from this community) the choice, whether they want to offer transitive super- > properties (for BG and BP) if they think it can help data consumer. This is a valid goal! And then define their disjunction iso-thes:broaderTransitive. People in the know should use iso-thes:broaderTransitive and not skos:broaderTransitive. Johan, this below is actual Turtle you could use. If you prefer OWL/RDF (a horrible invention), you can use the rdf2rdf program to convert. ----------- iso-thes:broaderGeneric a owl:ObjectProperty; rdfs:subPropertyOf skos:broader. iso-thes:broaderPartitive a owl:ObjectProperty; rdfs:subPropertyOf skos:broader. iso-thes:broaderInstantive a owl:ObjectProperty; rdfs:subPropertyOf skos:broader. iso-thes:broaderGenericTransitive a owl:TransitiveProperty. iso-thes:broaderGeneric rdfs:subPropertyOf iso-thes:broaderGenericTransitive. iso-thes:broaderPartitiveTransitive a owl:TransitiveProperty. iso-thes:broaderPartitive rdfs:subPropertyOf iso-thes:broaderPartitiveTransitive. iso-thes:broaderTransitive a owl:ObjectProperty; skos:scopeNote """ Defined as a disjunction of broaderGenericTransitive and broaderPartitiveTransitive (BGT+BPT). Unlike skos:broader, this property allows paths of BG and BP but not BI, nor mixed paths of BG+BP. Despite the name, this property is NOT transitive, because it excludes mixed paths. To comply with thesaurus design principles regarding query expansion, you should use this property instead of skos:broaderTransitive. """. iso-thes:broaderGenericTransitive rdfs:subPropertyOf iso-thes:broaderTransitive. iso-thes:broaderPartitiveTransitive rdfs:subPropertyOf iso-thes:broaderTransitive.
Received on Wednesday, 13 November 2013 08:47:04 UTC