Data validation in EDG - Use of undefined property

[Fan Li]

I imported the shapes and data graphs from the SHACL playground (https://shacl.org/playground/) into EDG and got 5 validation errors:

Missing label

Value:

Bob

Suggestion:

Generate a label for <http://example.org/ns#Bob>    Apply

Use of undefined property

Property:		http://schema.org/familyName
Value:		Junior

Use of undefined property

Property:		http://schema.org/deathDate
Value:		1968-09-10

Value does not have shape schema:AddressShape

Property:		http://schema.org/address
Value:		BobsAddress

Value is not < value of schema:deathDate

Property:		http://schema.org/birthDate
Value:		1971-07-07

I understand the first and the last 2 errors but not sure what exactly "Use of undefined property" means. Where should I define those properties?

I also looked at the validation SPARQL in "teamworkconstraints:UndefinedPredicateConstraint" but don't quite understand it.

SELECT $this ?path ?value

WHERE {

$this ?path ?value .

FILTER (?path NOT IN (<http://topbraid.org/search#defaultSearch>)) .

    FILTER NOT EXISTS { ?path ?p ?o } 

    FILTER NOT EXISTS { ?ps sh:path ?path } 

}

Thanks!

[Holger Knublauch]

A property is considered "undefined" if it does not appear as subject of any triple (e.g. ex:myProperty rdf:type rdf:Property would resolve that) and does not appear in a SHACL property shape (?ps sh:path ex:myProperty).

In this particular case, include the SHACL version of schema.org to resolve the references of familyName and deathDate.

Holger

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[Fan Li]

Thanks, Holger. I understand it now.

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