### Exisiting top-level ontologies
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

### Existing ontologies related to RDF resource assessment
@prefix dqv: <http://www.w3.org/ns/dqv#> .  # data Quality Vocabulary
@prefix ldqd: <https://www.w3.org/2016/05/ldqd#> .   # Linked data Quality Dimension
@prefix dqm:  <http://purl.org/eis/vocab/dqm#> .

### Newly-defined vocabularies
@prefix fqm:<http://purl.org/fqm#> .

fqm:
	a owl:Ontology ;
    dct:title "Foundational Quality Metrics (FQM)"@en ;
    dct:description "The Foundational Quality Metrics(FQM) vocabulary describes a set of objective metrics as the fundamental requirements that RDF resources must meet to maximize the potential of linked resources. "@en ;
    dct:creator [
    		foaf:name "Shuxin Zhang";
    		foaf:mbox <mailto:s.x.zhang@amsterdamumc.nl>
    	] ;
    dct:modified "2022-06-03"^^xsd:date ;
    dct:language "en"^^xsd:language ;
	foaf:homepage <http://purl.org/fqm#> .

fqm:uriNonResolvableMetric
    a dqv:Metric ;
    rdfs:label 'Non-resolvable URIs' ;
    skos:definition '1) Check if an RDF resource is resolvable (Boolean), or 2) check if URIs in that RDF resource are resolvable, and measure the proportion of non-resolvable URIs to all unique URIs.' ;
    dqv:inDimension ldqd:availability ;
    skos:relatd dqm:DereferenceabilityMetric .

fqm:uriNonParsableMetric
    a dqv:Metric ;
    rdfs:label 'Non-parsable URIs' ;
    skos:definition '1) Check if an RDF resource is parsable (Boolean), or 2) check if URIs in that RDF resource which already indicate RDF content-type are parsable, and measure the proportion of non-parsable URIs to all unique URIs in that RDF resource;' ;
    dqv:inDimension ldqd:availability ;
    skos:relatd dqm:MisreportedContentTypesMetric .

fqm:uriUndefinedMetric
    a dqv:Metric ;
    rdfs:label 'Undefined URIs' ;
    skos:definition 'Measure the proportion of undefined URIs to all unique URIs in an RDF resource. ' ;
    dqv:inDimension ldqd:consistency, ldqd:interpretability ;
    skos:relatd dqm:UndefinedClassesAndPropertiesMetric .

fqm:misplacedClassesOrPropertiesMetric
    a dqv:Metric ;
    rdfs:label 'Misplaced classes or properties metric' ;
    skos:definition '1)Measure the proportion of classes which are incorrectly used as a predicate to all unique classes; or 2) measure the proportion of properties which are incorrectly used as a class to all unique properties.' ;
    dqv:inDimension ldqd:consistency ;
    skos:relatd dqm:MisplacedClassesOrPropertiesMetric .

fqm:misusedOwlDatatypeOrObjectPropertiesMetric
    a dqv:Metric ;
    rdfs:label 'Misuse Owl datatype or object properties metric' ;
    skos:definition 'Measure the proportion of misused ‘owl:datatypeProperty‘ (or ‘owl:objectProperty‘ ) properties to all properties.' ;
    dqv:inDimension ldqd:consistency ;
    skos:relatd dqm:MisusedOwlDatatypeOrObjectPropertiesMetric .

fqm:usageOfDeprecatedClassesOrProperties
    a dqv:Metric ;
    rdfs:label 'Usage of Deprecated Classes or Deprecated Properties' ;
    skos:definition "Measure the proportion of deprecated classes or properties to all unique classes or properties." ;
    dqv:inDimension ldqd:consistency ;
    skos:relatd dqm:UsageOfDeprecatedClassesOrProperties .