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Table 1 List of metrics as minimal requirements for quality assessment on RDF resources

From: Automated approach for quality assessment of RDF resources

Category

Metric

Definition

Resolvability

Non-resolvable URIs

Measure the proportion of unique non-resolvable URIs to all unique URIs in an RDF resource. A URI is non-resolvable if it returns an error code (e.g., http 404).

Parsability

Non-parsable URIs

Measure the proportion of unique non-parsable URIs to all unique URIs in an RDF resource. A URIs is non-parsable if its media type is indicated as RDF content-type, but its content cannot be parsed as RDF triples.

Consistency

Undefined URIs

Measure the proportion of unique, undefined URIs to all unique URIs in an RDF resource. A URI is considered as undefined if it does not exist within the parsed RDF triples resulting from resolving the URI.

 

Misplaced classes or properties

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.

 

Misuse of owl:DatatypeProperty or owl:ObjectProperty

Measure the proportion of misused ‘owl:DatatypeProperty’ (or ‘owl:ObjectProperty’ ) properties to all properties.

 

Use of deprecated classes or properties

Measure the proportion of deprecated classes or properties to all unique classes or properties.