ontology Questions

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If you look at the OWL ontology definition, you'll see a bunch of class definitions. One of them is the following: owl:Nothing a owl:Class ; rdfs:label "Nothing" ; rdfs:comment "This is the empt...
Lyra asked 27/1, 2014 at 20:35

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I've some data triplets that I want to write in some sort of basic OWL ontology. I've triplets like: Delhi is part of India or India is an Asian country Note that I've relations like "is-a"...
Precancel asked 30/4, 2011 at 10:24

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Often when discussing the power of semantic databases and ontologies, I hear people say that RDF data is versatile because ontologies can be applied to the data to look at it in different ways. Ho...
Ury asked 23/1, 2014 at 19:39

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I want to create "RDF triple" by taking "text file/document" as an input. It means a tool like portege-OWL, which will convert Text file into RDF triple. And may I know the steps how to do this. A...
Outrush asked 9/1, 2014 at 5:35

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I have 2 properties, e.g. 'hasColor' and 'hasFinish'. I want to express with ontology that in case of ontology class A are properties 'hasColor' and 'hasFinish' equal (owl:equivalentProperty). But ...
Leoni asked 24/11, 2013 at 23:42

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Is it possible to count the number of the edges that connect two instance with a SPARQL query? I want to find a path.
Signac asked 25/10, 2013 at 10:35

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I am using Princeton's WordNet for an application, but there is no support for pronouns, conjunctions, and several other types of words within the database. Does anybody know if there is a way to s...
Photoluminescence asked 12/6, 2013 at 0:43

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Does any one know how to query Classes with Object Property in Sparql? Assume we have an OWL file which contains follows Human ----(hasPizza)---> Pizzas Human and Pizzas are classes (or conce...
Infantryman asked 27/8, 2013 at 6:7

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I´m trying to query a repository using SPARQL and Sesame 2.7 but when I run my code I get the following error org.openrdf.http.client.SesameHTTPClient - Server reports problem: org.openrdf.query.p...
Aluminium asked 12/8, 2013 at 21:11

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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 th...
Dissenter asked 29/7, 2013 at 13:4

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My ontology is book classification library. I have problems in this. I want to build a book classification ontology by protégé 4.1, this classification has 14 categories, beside the sibling classe...
Lanta asked 18/7, 2013 at 13:35

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The W3C TAG published the Working Draft URLs in Data Primer last month. It specifies a solution for the httpRange-14 issue. Now vocabularies should specify categories for their properties, i.e. if...
Easting asked 12/7, 2013 at 11:34

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I'm writing a desktop app using Gnome technologies, and I reached the stage I started planning Semantic Desktop support. After a lot of brainstorming, sketching ideas and models, writing notes and...
Delirious asked 29/5, 2013 at 18:11

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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> <...
Pyrostat asked 11/5, 2013 at 10:58

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I need to create an ontology for scheduling. I use FOAF and Time OWL for storing participants and times, but I also need to store the place, where an appointment take place: the address. Ontologies...
Panchromatic asked 10/2, 2013 at 13:7

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I just discovered OWL and Protege. Upon reading through this reference page (which I quote below), I am left wondering whether it is possible to not use the abstract OWL syntax, and rather to write...
Toothwort asked 29/11, 2012 at 5:50

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I have a practical seminar this semester, and I want to use ontology on Android application. I choose Protege owl ontology as a ontology API and this tool worked in normal Java project. But when I...
Korten asked 10/7, 2010 at 11:26

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Imagine I start using an ontology because it provides some useful vocabulary to describe an object I'm interested in, e.g. FOAF to describe a Person (me). I immediately run into two problems. I com...
Unction asked 19/10, 2012 at 23:28

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Ease of installation/use is the most important factor here - not performance. Small is OK as large datasets are not expected.
Nanceenancey asked 20/11, 2008 at 10:44

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I have the following Python code. It basically returns some elements of RDF from an online resource using SPARQL. I want to query and return something from one of my local files. I tried to edit i...
Isleen asked 26/3, 2012 at 18:54

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I have been stuck for two days now trying to understand why the following scenario isn't working: screenshots here: http://dl.dropbox.com/u/4677548/screenshots.html I have a VegetarianFood class...
Wiencke asked 28/4, 2012 at 19:19

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Using the Wine ontology, I want to create SPARQL query so I can retrieve all wines and their properties like the table below - consider that I don't know the properties' names a priori. vin | rdf:...
Cristiano asked 20/4, 2012 at 18:46

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I am looking to visualize ontologies for understanding and making others understand. I would prefer to have top-down hierarchy of classes. I have used OntoGraph which comes with Protégé, but ...
Cookie asked 23/2, 2012 at 8:5

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I have a question about SPARQL. I have an ontology of animals: Animals (is a superclass with object property <hasColor>) ------ Mammals (subclass of Animals) ------------- Dog (subclass of M...
Anselme asked 30/3, 2012 at 11:41

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Is it possible to query data from a Model without writing sqarql-queries? Adding properties to resources or resources to models can be done easily, but I haven't found out yet, if there is a more e...
Distend asked 27/3, 2012 at 21:57

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