view rdfpy/writeMarsyasOnto.py @ 0:62d2c72e4223

initial commit

import rdflib
from rdflib import Graph, RDF, RDFS, plugin, URIRef, Literal, OWL, Namespace

basedir = '/Users/alo/MusicOntology/features/'

local = 'http://sovarr.c4dm.eecs.qmul.ac.uk/features/'

DC = Namespace(u"http://purl.org/dc/elements/1.1/")

graph = Graph()
graph.bind('af', URIRef(local))
graph.bind('dc', URIRef('http://purl.org/dc/elements/1.1/'))
graph.bind('owl', URIRef('http://www.w3.org/2002/07/owl#'))

graph.add((
    URIRef(''),
    RDF.type,
    OWL.Ontology
))

graph.add((
    URIRef(''),
    DC['title'],
    Literal("Marsyas Ontology")
))

graph.add((
    URIRef(''),
    OWL.versionInfo,
    Literal("Version 0.1")
))

graph.add((
    URIRef(''),
    DC['description'],
    Literal("This is an ontology derived from Marsyas feature extraction tools for the Audio Features engineering process")
))


source = Graph()
source.parse(basedir+'rdfonto/af-Marsyas.n3', format='n3')

categories = []

for su, ob in source.subject_objects(URIRef('file:///Users/alo/MusicOntology/features/rdf/type')):
    if not ob in categories:
        categories.append(ob)

graph.add((
    URIRef(local+'Analysis'),
    RDF.type,
    OWL.Class
))        
    
for category in categories:
    graph.add((
        URIRef(local+category),
        RDF.type,
        OWL.Class    
    ))
    graph.add((
        URIRef(local+category),
        RDFS.subClassOf,
        URIRef(local+'Analysis'),
    )) 

for su in source.subjects(RDF.type, RDFS.Resource):
    idref = URIRef(local+su.split('/')[-1])
    graph.add((
        idref,
        RDF.type,
        OWL.Class
    ))
    
    count = sum(1 for _ in source.objects(su,URIRef('file:///Users/alo/MusicOntology/features/rdf/type')))
    
    if count > 0:    
        for ob in source.objects(su,URIRef('file:///Users/alo/MusicOntology/features/rdf/type')):
            graph.add((
                idref,
                RDFS.subClassOf,
                URIRef(local+ob)
            ))
    else:
        graph.add((
            idref,
            RDFS.subClassOf,
            URIRef(local+'Analysis'),
        ))
        
    for ob in source.objects(su,URIRef('http://purl.org/dc/elements/1.1/description')):
        graph.add((
            idref,
            URIRef('http://purl.org/dc/elements/1.1/description'),
            ob
        ))

graph.serialize(basedir + 'rdfonto/Marsyas-onto.rdf')        
graph.serialize(basedir + 'rdfonto/Marsyas-onto.n3', format='n3')