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[protege-owl] import ontologies

Thomas Schneider schneidt at
Thu Aug 5 06:11:32 PDT 2010

Hi Selma,

you can try to extract a module. For such a task you usually specify a  
set of terms (signature) which you are interested in, and the module  
for this signature will contain those of the ontology's axioms which  
are relevant for those terms. There is a host of module extraction  
approaches available, each of which conceives the term "relevant" in  
its own way. Strong guarantees in terms of this relevance are provided  
by locality-based modules. Currently, there is only a prototype of a  
plugin for an older version of Protégé available that extracts  
locality-based modules:

However, we also host an up-to-date RESTful web service which takes  
the ontology URI and the signature, and returns the module. It is  
based on the module extraction package in the OWL API and lives here:

I'm happy to answer any questions about the usage of the tools or the  
logical background, or explain the above mentioned guarantee more in  



On 5 Aug 2010, at 12:47, selma selma wrote:

> Hello,
> I'm working with Cyc ontology, and I want to use only a fragment of  
> this ontology and extend it with some concepts or properties (by  
> specializing some classes for example). I wanna know if there is a  
> plugin in Protege that allows the definition of a fragment of an  
> existing ontology and that checks its syntactic and semantic  
> coherence.
> Thank you.
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|  Dr Thomas Schneider                    schneider (at)  |
|  School of Computer Science  |
|  Kilburn Building, Room 2.114                 phone +44 161 2756136  |
|  University of Manchester                                            |
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|  Manchester M13 9PL                                      (o~o)       |

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