我有一个本体论,我已经定义了一系列类,子类和属性。现在我想用Python代码自动实例化本体并再次将其保存在RDF / XML中并将其加载到Protege中。我写了以下代码:
def instantiating_ontology(rdf_address):
from rdflib import *
g = Graph()
input_RDF = g.parse(rdf_address)
#input_RDF = g.open(rdf_address, create=False)
myNamespace="http://www.semanticweb.org/.../ontologies/2015/3/RNO_V5042_RDF"
rno = Namespace(myNamespace+"#")
nodeClass = URIRef(rno+"Node")
arcClass = URIRef(rno+"Arc")
#owlNamespace = 'http://www.w3.org/2002/07/owl#NamedIndividual'
namedIndividual = URIRef('http://www.w3.org/2002/07/owl#NamedIndividual')
rdftype = URIRef("http://www.w3.org/1999/02/22-rdf-syntax-ns#type")
for i in range(0,100):
individualName = rno + "arc_"+str(arcID)
#arc_individual= BNode(individualName)
arc_individual = BNode()
#g.add()
#g.add((arc_individual,rdftype, namedIndividual))
g.add((arc_individual,rdftype, arcClass))
g.add((arc_individual,rdftype, arcClass))
#g.commit()
output_address ="RNO_V5042_RDF.owl"
g.serialize(destination = output_address)
该文件包含添加到rdf / xml的三元组:
<rdf:Description rdf:nodeID="N0009844208f0490887a02160fbbf8b98">
<rdf:type rdf:resource="http://www.semanticweb.org/ehsan.abdolmajidi/ontologies/2015/3/RNO_V5042#Arc"/>
但是当我在Protege中打开文件时,没有类的实例。
有人能告诉我,我定义实例的方式是错误还是我应该使用不同的标签?
答案 0 :(得分:2)
在玩完代码和结果之后,我意识到rdf:nodeID应该用rdf:about替换。这样做我只需要改变
for i in range(0,100):
individualName = rno + "arc_"+str(arcID)
#arc_individual= BNode(individualName)
arc_individual = BNode() #---> remove this one
arc_individual = URIRef(individualName) #----> add this one
g.add((arc_individual,rdftype, arcClass))
g.add((arc_individual,rdftype, arcClass))
arc_individual = URIRef(individualName)
这看起来很容易,但我花了一些时间来理解。我希望这可以帮助别人。 :d