problem about owl-Collection of common programming errors

10 years ago
admin
4 minutes

  • kitsune
    c# .net rdf semantic-web owl
    I’m looking for a library that can deal with RDF and OWL data.So far I have found:semweb (no owl support for all I know) rowlex (more of a ‘browser’ application)Your recommendations:LinqToRdf (very interesting, thanks mark!)

  • user1772602
    jena owl
    I have a owl ontology, I read it into jena OntModel. then I update it at runtime. Now I want to write it back as a OWL ontology. I am using the code below:RDFWriter writer = model.getWriter(“RDF/XML”);writer.write(model, out, root_uri); it gives me RDF syntax and not the OWL syntax. How can I write the OntModel into OWL syntax?? any solution??

  • MaatDeamon
    owl triplestore owl-api
    I am working on a project focused on OWL. Recently we came up with the requirement to deal with multiple owl ontologies interconnected with each other using the named graph appraoch.I have two questions on the matter:1-Is there any tool (i suppose triple store) that support that ?2-Is there any tool that would allow me to keep working with the OWL API, to update my ontologies at runtime while providing me a owl store facility ?

  • peter.murray.rust
    java .net owl rowlex protege
    I work with RDF and OWL but until I came to SO I’d never heard of Rowlex and OwlGrinder. It’s got a much larger presence on SO than Protege or Pellet (although from a smallish number of active people). Is it primarily the .NET equivalent of Protege or does it take a different approach (It stresses the Open-world assumption). There’s very little on Rowlex on Google (much less than on SO) so I’d be grateful for an assessment of its role. And are there other .NET tools that are alternatives?

  • Consec
    javascript jquery owl
    I want to load an OWL file before executing other (visualisation-)scripts. To do this I tried everything from $(document).readytofunction visualize (file) { if (!file){setTimeout(visualize(file), 2000)} else{jQuery(function($){visFeaturePool.init(file)})}}I think it has to be possible with the setTimeout but that isn’t working. I throws the error: Uncaught RangeError: Maximum call stack size exceeded, so it doesn’t wait, it just recalls the visualize function untill the stack is full.Does anybo

  • Joshua Taylor
    rdf semantic-web owl
    I have object properties named employ and employedBy as they are inverse of each other. How to give these properties to an instance? My employ property:<owl:ObjectProperty rdf:ID=”employ”><rdf:type rdf:resource=”http://rdf.pozitron.com/organizations/” /><rdfs:domain rdf:resource=”http://rdf.pozitron.com/organizations/”/><rdfs:range rdf:resource=”http://rdf.pozitron.com/people/”/> </owl:ObjectProperty>My employedBy property:<owl:ObjectProperty rdf:ID=”employedBy”&

  • ARH
    java awt rdf jena owl
    I’m using Jena. I created an interface that allows to add, modify and remove instances in rdf file. I’m getting this warn when I execute my code:WARN [main] (RDFDefaultErrorHandler.java:36) – unknown-source: {W136} Relative URIs are not permitted in RDF: specifically < >Anyone knows how can I solve this?Here is my code:import java.util.*; import java.util.List; import com.hp.hpl.jena.rdf.model.*; import com.hp.hpl.jena.ontology.*; import com.hp.hpl.jena.ontology.impl.*; import com.hp.hpl.jena

  • Rosh
    java rdf jena owl
    I want to load my OWL ontology into java code. When I run my code it will give following error.Exception in thread “main” java.lang.NoSuchMethodError: org.apache.xerces.impl.dv.XSSimpleType.getNamespace()Ljava/lang/String; at com.hp.hpl.jena.datatypes.xsd.XSDDatatype.<init>(XSDDatatype.java:211) at com.hp.hpl.jena.datatypes.xsd.XSDDatatype.<init>(XSDDatatype.java:222) at com.hp.hpl.jena.datatypes.xsd.impl.XSDFloat.<init>(XSDFloat.java:44) at com.hp.hpl.jena.datatypes.xsd.XSDDat

  • CSchulz
    java owl protege
    I am new to Protege API and I have just created on Eclipse a small application which uses an external OWL file. Also I did import all the necessary libraries. import java.util.Collection; import java.util.Iterator;import edu.stanford.smi.protege.exception.OntologyLoadException; import edu.stanford.smi.protegex.owl.ProtegeOWL; import edu.stanford.smi.protegex.owl.model.*;public class Trial {public static void main(String[] args) throws OntologyLoadException {String uri = “C:/Documents and Setting

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