[Kim-discussion] questions about trusted entities and extending ontologies

[Philip Alexiev]

.Hi Yang,


On 06/04/2010 11:05 PM, Yang Fangkai wrote:
>       2. As mentioned here
> http://ontotext.com/kim/doc/sys-doc/DesigningOntology.html, extending
> KIM ontology with new ones needs to define the new ontology based on
> PROTON. However, my problem now is I have a huge and complicated
> domain ontology written in OWL. Does this mean I should re-analyze the
> whole domain ontology and manually align each class/properties into
> PROTON? Is there any easy way to do that?
>    
I am not aware of any automated and/or easier way to do this. Follow the 
instructions in documentation ( 
http://ontotext.com/kim/doc/sys-doc/DesigningOntology.html ) and 
especially in 3. Integrating Ontology Extensions. The important points 
are that if you want your objects to be recognized in the texts, you 
should follow some rules:
1. All the classes, the objects belong to, should inherit directly or 
indirectly http://proton.semanticweb.org/2006/05/protons#Entity.
2. Any added classes or properties (relations) must be declared visible.
Those rules are what the  LKB Gazetteer resource uses to fill its lists 
from the ontology. So following them will result in the gazetteer using 
the objects for recognition.
3. It is also good to be more specific with the inheritance and whenever 
possible inherit some of the more specific classes in PROTON Top module. 
This also servers as a base for the rules in the Jape Grammars.

>        3. I used Protege to open protons.owl, but it returned the
> following error message. I am wondering why... (maybe this is no
> longer the KIM question, but I will be very thankful if you could
> offer me a few hints)
>
> org.semanticweb.owlapi.rdf.syntax.RDFParserException:
> [line=92:column=48] IRI
> 'http://www.w3.org/2000/01/rdf-schema##Literal' cannot be resolved
> against curent base IRIhttp://proton.semanticweb.org/2006/05/protons#
>    
Never came across this error. But you may try some other ontology 
editors/viewers like Swoop or TopBraid Composer .

Greetings,
Philip

-- 
Philip Alexiev<philip.alexiev at ontotext.com>
Software Engineer
Ontotext AD

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