owl | 易学教程

obtain the matrix in protege

阅读更多关于 obtain the matrix in protege

My work is about library book of recommendation systems . that as input I need book Classification ontology . in my ontology classify library books. this classification has 14 categories, beside the sibling classes Author, book, Isbn. Individuals in book class are book’s subject(about 600 subjects) , and individuals in author class are name’s author and also isbn class. I design this ontology with protege 4.1. also I collected and Have got in part of belong book to categories manually. That a object properties is name “hasSubject” related individual book class with categories. Example book “A”

Defining cardinality of data property in OWL

阅读更多关于 Defining cardinality of data property in OWL

问题 Is it possible to define the cardinality of data property in OWL? For instance considering a class "Person" with the data property "Age", is there a way to declare that the data property "Age" must have a single value? 回答1: You use the axiom that you would with an object property (DL and Manchester syntaxes): Person &sqsubseteq; =1.hasAge Person subClassOf hasAge exactly 1 Here's a small ontology with just such axioms: @prefix : <http://stackoverflow.com/q/24188632/1281433/people-have-exactly

Is there a way to convert the data format of an RDF vocabulary to SKOS

阅读更多关于 Is there a way to convert the data format of an RDF vocabulary to SKOS

The rdfs file I'm want to use is cv.rdfs , I want to convert it to SKOS, so I can use it in Maui Indexer I am a complete noob in the subject. Please help. SKOS is for organizing concepts, and doesn't deal with properties, it seems, so there's a lot of information in the CV RDFS that doesn't really have a SKOS version. However, it's easy enough to define a mapping for the RDFS classes and generate some data using SPARQL. Here's a possible mapping: rdfs:Class maps to skos:Concept. rdfs:comments map to skos:notes. rdfs:labels map to skos:prefLabels. rdfs:subClassOf maps to skos:broader. Using

Representing if-then sentence using OWL?

阅读更多关于 Representing if-then sentence using OWL?

I am working with basic OWL, and it's quite easy to represent some simple sentence like "Songoku is a lecturer, he teaches Maths". E.g.: <owl:Class rdf:ID="Lecturer"></owl:Class> <owl:Class rdf:ID="Subject"></owl:Class> <owl:Property rdf:ID="teach"> <rdfs:domain rdf:resource="#Lecturer"/> <rdfs:range rdf:resource="#Subject"/> </owl:Property> <Subject rdf:ID="Maths"></Subject> <Lecturer rdf:ID="Songoku"> <teach> <Subject rdf:about="#Maths"></Subject> </teach> </Lecturer> But I faced a problem when I tried to represent this sentence: Bob is a Student, If Bob has 5 dogs, then he has at least 1

Fuseki how to add Pellet reasoner

阅读更多关于 Fuseki how to add Pellet reasoner

问题 I want to use pellet reasoner with my Fuseki 2.3.1 First: I added Pellet reasoner to my config.ttl as this: ja:reasoner [ ja:reasonerClass "org.mindswap.pellet.jena.PelletReasonerFactory";] So now I have to add the jar for Pellet to fuseki This page explains how to add jars (not specificaly pellete) to fuseki https://jena.apache.org/documentation/permissions/example.html So I commet this line exec $JAVA $JVM_ARGS -jar "$JAR" "$@" and I uncommet this line java $JVM_ARGS -cp "$JAR:$APPJAR" org

How do I find where Sesame stores repositories?

阅读更多关于 How do I find where Sesame stores repositories?

问题 I'm using booth Sesame .wars in Tomcat 7 on OS X 10.8, but now it doesn't work any more. I set up a new Tomcat with two new Sesame .war but now it uses the old repository. Where are these stored? (Couldn't add a new Repo or delete the old one). 回答1: Sesame Server by default stores its configuration data and database files in %APPDATA%\Aduna on Windows, $HOME/.aduna on Linux, and $HOME/Library/Application Support/Aduna on Mac OS X. If you want a completely new install, simply delete this

Sparql query on restriction list (Equivalent To) in protégé

阅读更多关于 Sparql query on restriction list (Equivalent To) in protégé

问题 My ontology is about Cocktail. This is a cocktail named "AfterGlow" <owl:Class rdf:about="&cocktails;AfterGlow"> <owl:equivalentClass> <owl:Class> <owl:intersectionOf rdf:parseType="Collection"> <owl:Restriction> <owl:onProperty rdf:resource="&cocktails;aPourIngredient"/> <owl:someValuesFrom rdf:resource="&cocktails;JusAnanas"/> </owl:Restriction> <owl:Restriction> <owl:onProperty rdf:resource="&cocktails;aPourIngredient"/> <owl:someValuesFrom rdf:resource="&cocktails;JusOrange"/> </owl

OWL 2 reasoning with SWRL rules

阅读更多关于 OWL 2 reasoning with SWRL rules

问题 I'm trying to use the HermiT reasoner to compute inferences for an ontology which contains a set of OWL axioms and a SWRL rule: Ontology( ClassAssertion( :Student :Bob ) ClassAssertion( :Professor :DrBoffin ) ClassAssertion( :University :UF ) ObjectPropertyAssertion( :supervises :DrBoffin :Bob ) ObjectPropertyAssertion( :worksAt :DrBoffin :UF ) EquivalentClasses( :Student ObjectHasSelf( :r1 )) EquivalentClasses( ObjectHasSelf( :r2 ) ObjectSomeValuesFrom( :worksAt :University ))

Adding statements of knowledge to an OWL Ontology in Protege)

阅读更多关于 Adding statements of knowledge to an OWL Ontology in Protege)

In my Ontology I have three classes, Player , Team , and Competition . I also have the two object properties, employs , and competesIn . The domain of employs is Team , and the range Player , the domain of competesIn is Team or Player and the range Competition . I want the Ontology to infer that if a Player is employed by a Team and that Team competes in a Competition then the Player also competes in that Competition . Is there any way to add this information to an Ontology without putting in the {Player} competesIn {Competition} for every single individual in the ontology? Joshua Taylor First

How to import specific classes and object properties from an ontology in Protege?

阅读更多关于 How to import specific classes and object properties from an ontology in Protege?

问题 I want to import some classes in Protege from different ontologies to my ontology. For example, I need the classes foaf:Person , org:Site , vcard:Organization , and many more. I don't want to create them by myself (and modifying their IRI). When I did import the whole ontology (Schema.org, vCard, FOAF, …), I had many elements that I don't need. Is there any way to do it? 回答1: — Have you looked at this thread: protege-project.136.n4.nabble.com/… — I tried to use it, but it didn't work. There