ontology

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JenaException: Invalid properties file

I have been working with Jena fine for the first few weeks. However, today tomcat has started spitting out errors.[详细]

2023-01-28 17:05 分类：问答
Annotating sensor data but no rdf:type

I\'m annotating sensor observations using JENA, RDF and the W3C SSNXG\'s sensor ontology. I\'ve created an individual of the SSNXG\'s SensingDevice using a local namespace for the individual. When I[详细]

2023-01-28 13:52 分类：问答
Instantiate object when Tomcat starts

I have a Tomcat server deployed that receives observations transmitted from sensors in JSON format. I als开发者_高级运维o have a sensor describing ontology that I want to make use of.[详细]

2023-01-26 03:20 分类：问答
how we can create a query based on SPARQL to see the value of some data type property?

I create this query: PREFIX VB: <http://VBnet#> SELECT?x ?y WHERE { ?x VB:HasName ?y } HasName is one datatype property.When I run this query in Protege, system show me just the subject 开发[详细]

2023-01-21 01:23 分类：问答
Input CNF for SAT4J solver

I a totally new to sat4j solver.. it says some cnf file should be given as input is there any possible way to give the rule as input and get whether it is satisfiable or not?[详细]

2023-01-20 07:19 分类：问答
How to get the minCardinality of properties?

I am using Jena. How 开发者_C百科can I get the minCardinality of a property?Try asking on SemanticOverflow.comLet me guess... it\'s a class assignment? Maybe ask Fateme. :)[详细]

2023-01-19 03:12 分类：问答
Loading an ontology (owl) using jena and show its graph

Im working in a project where I have to load any ontology (is chosen by the user) in .owl language and display its graph as a tree menu. It means the onto开发者_如何学运维logy can be any size.[详细]

2023-01-18 01:57 分类：问答
Is there RDF that describes software defects?

Background: I know, via pypi, about DOAP.Is there something similar to de开发者_运维技巧scribe software defects?Toby has a bug ontology. It covers the sort of information you\'d find in a bug tracker[详细]

2023-01-17 22:15 分类：问答
Is there an elegant way to store an ontology graph and the definitions/data associated with nodes?

I have written a simple module to store and manipulate an ontology which is provided in a flat file using Perl. For this, I use the Graph module which is excellent.[详细]

2023-01-17 13:50 分类：问答
How to read out specific values from an OWL Ontology using Java

I\'ve got an OWL Ontology: <?xml version=\"1.0\"?> <rdf:RDF xmlns=\"http://www.owl-ontologies.com/Ontology1272923485.owl#\"[详细]

2023-01-11 08:00 分类：问答