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[protege-discussion] Reasoning Errors

Samson Tu swt at stanford.edu
Wed Nov 5 09:24:35 PST 2008


Jones, Josette F. wrote:

> Issue 1: Converting project to OWL using "File -> Export to Format -> OWL" fails with the following message in a pop -up window:
> 
> "Export Failed: edu.stanford.smi.protege.util.MessageError at f16070"
> 
> The following exception is seen in the console (please check the attachment Export_Console.txt for complete log):
> 
> SEVERE: Failed to save file file:/C:/Users/bugsnspikes/Documents/IUPU/RA/Ontolog
> y/scans_oct30_1.owl using Protege2Jena. -- com.hp.hpl.jena.shared.BadURIExceptio
> n: Only well-formed absolute URIrefs can be included in RDF/XML output: 

Are there class, property, and instance names that are illegal in OWL?


> *********************************************************
> 
> Issue 3: Enabling SWRL tab after resolving issue#3 does not converge. Runs on high CPU(100%) and memory (> 271,000k) for several minutes. Then the Protege display goes blank and CPU usage falls to zero for the process. Please check SWRLTab_Console.txt for the complete log.
> 
> NOTE: This problem is not seen while working with a OWL project. Its only seen after converting to OWL from RDF format.
> *********************************************************

How big is your ontology and how much memory did you allocated to 
Protege? Try to allocate to Protege 80% of your RAM.

Samson




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