hasMainClassification, hasAdditionalClassification codelist and example

[VladimirAlexiev]

These two props

epo:hasAdditionalClassification   rdf:type          owl:ObjectProperty ;
epo:hasMainClassification rdf:type          owl:ObjectProperty ;

Refer to "The codelist to be used is at-voc:cpv which is available at http://publications.europa.eu/resource/dataset/cpv".

In the browser this resolves to http://publications.europa.eu/resource/cellar/1356ebf8-80b9-11ea-bf12-01aa75ed71a1.0001.05/DOC_1, which is a gc.xml file and doesn't offer RDF nodes that can be used in an ObjectProperty. Here's how it looks:

	<SimpleCodeList>
		<Row>
			<Value ColumnRef="code">
				<SimpleValue>03000000</SimpleValue>
			</Value>
			<Value ColumnRef="Name">
				<SimpleValue>Agricultural, farming, fishing, forestry and related products</SimpleValue>
			</Value>

But if you get it with curl, you get an RDF file that refers to http://publications.europa.eu/resource/expression/cpv.
Get this with curl and you see another RDF file that has these triples:

<http://publications.europa.eu/resource/expression/cpv>
        cdm:expression_manifested_by_manifestation
                <http://publications.europa.eu/resource/distribution/cpv/rdf/skos_ap_eu> , 
                <http://publications.europa.eu/resource/distribution/cpv/rdf/skos_core> , 
                <http://publications.europa.eu/resource/distribution/cpv/xml/gc> ;

Finally, these 3 refer to machine-readable distributions of CPV:

• http://publications.europa.eu/resource/distribution/cpv/rdf/skos_ap_eu/cpv-skos-ap-eu.rdf
• http://publications.europa.eu/resource/distribution/cpv/rdf/skos_core/cpv-skos.rdf
• http://publications.europa.eu/resource/distribution/cpv/xml/gc/Cpv.gc (the same .gc.xml file)

I think the first is the richer one of the RDF formats. You can get it like this:

curl -LO http://publications.europa.eu/resource/distribution/cpv/rdf/skos_ap_eu/cpv-skos-ap-eu.rdf

Therefore please:

• change the reference to http://publications.europa.eu/resource/distribution/cpv/rdf/skos_ap_eu/cpv-skos-ap-eu.rdf (or http://publications.europa.eu/resource/distribution/cpv/rdf/skos_ap_eu/)
• put the same in rdfs:seeAlso
• give skos:example <http://data.europa.eu/cpv/cpv/03100000> to illustrate the form of URL (that's "Agricultural and horticultural products")

[VladimirAlexiev]

The URLs in http://publications.europa.eu/resource/distribution/cpv/rdf/skos_core/cpv-skos.rdf are the same, and the file is much smaller (not because skos_ap_eu is much richer, but because it's formatted badly).

So it's better to refer to http://publications.europa.eu/resource/distribution/cpv/rdf/skos_core/cpv-skos.rdf (or http://publications.europa.eu/resource/distribution/cpv/rdf/skos_core)

[andreea-pasare]

The codelists are just recommendations in the ePO UML diagrams, therefore all reference to codelists in the machine readable files have been removed.

[VladimirAlexiev]

Similar objections to closing this as #396

[andreea-pasare]

@VladimirAlexiev, thank you for your reply. This seems to be a change that needs to be done in model2owl. I added a ticket there regarding this request:

• Modified original definitions model2owl#198