Semantic Web Ontology Analysis Techniques

From Semantic Portal Wiki

Contents 1 Validation 2 Statistics 2.1 Meta Usage 2.1.1 POP-C (populated classes) 2.1.2 POP-P (populated properties) 2.2 subjects (DEF-C and DEF-P)

Validation

RDF validator

• http://www.w3.org/RDF/Validator/

OWL1 validator

• http://www.mygrid.org.uk/OWL/Validator
• http://www.mindswap.org/2003/pellet/demo.shtml

OWL 2 validator

• http://owl.cs.manchester.ac.uk/validator/

editor

• http://www.mindswap.org/2004/SWOOP/ (offline)
• http://protege.stanford.edu/ (offline)
• http://pellet.owldl.com/owlsight/ (online, support owl2)

Statistics

• sparql endpoint: http://data-gov.tw.rpi.edu/joseki/sparql.html

Meta Usage

meta usage refers to how a Semantic Web Term (an RDF resource) is used in a Semantic Web document as a class or property [1].

• [1] Li Ding and Tim Finin, Characterizing the Semantic Web on the Web, in Proceedings of the 5th ISWC, November, 2006. http://ebiquity.umbc.edu/paper/html/id/316/

POP-C (populated classes)

execute

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/> 
SELECT ?o (count(*) as ?cnt)
FROM <http://github.com/lucmoreau/OpenProvenanceModel/raw/master/elmo/src/main/resources/opm.owl> 
WHERE 
{
  ?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ?o
} 
group by ?o 
order by ?o

POP-P (populated properties)

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/> 
SELECT ?p (count(*) as ?cnt)
FROM <http://github.com/lucmoreau/OpenProvenanceModel/raw/master/elmo/src/main/resources/opm.owl> 
WHERE 
{
  ?s ?p ?o
} 
group by ?p
order by ?p

subjects (DEF-C and DEF-P)

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/> 
SELECT distinct ?s
FROM <http://github.com/lucmoreau/OpenProvenanceModel/raw/master/elmo/src/main/resources/opm.owl> 
WHERE 
{
  ?s rdf:type ?o
  filter (!isblank(?s))
}
order by ?s