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Re: owl:sameAs - Is it used in a right way?

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Fri, 15 Mar 2013 17:06:32 -0400
Message-ID: <51438D58.9000403@openlinksw.com>
To: public-semweb-lifesci@w3.org
On 3/15/13 2:02 PM, Umutcan ŞİMŞEK wrote:
> Thanks for the quick answer : )
> So this issue is that subjective for contexts which allows to use 
> owl:sameAs to link resources  if they are not semantically even a 
> little bit related in real world?

Of course not. The problem is that you come to a point where equivalence 
claims are utterly blurred by context. It a semantic resolution kind of 

The way I've always addressed this problem is by encouraging folks to 
put this kinds of claims in dedicated named graphs. Then you have the 
ability to negate or include. In addition, at least with Virtuoso (the 
product I oversee), you can apply owl:sameAs reasoning conditionally.

Ultimately, this whole thing has to be "horses for courses" compliant :-)

> Sorry if I'm asking too basic questions. I'm still a rookie at this :D
> Umutcan
> On 15-03-2013 19:38, Kingsley Idehen wrote:
>> On 3/15/13 1:05 PM, Umutcan ŞİMŞEK wrote:
>>> My question is, does LODD use owl:sameAs properly? For instance, are 
>>> those two resources, dbpedia:Metamizole and drugbank:DB04817 (code 
>>> for Metamizole), really identical? Or am I getting the word 
>>> "property" in the paper wrong?
>> The question is always about: do those URIs denote the same thing? 
>> Put differently, do the two URIs have a common referent?
>> ## Turtle ##
>> <#i> owl:sameAs <#you>.
>> ## End ##
>> That's a relation in the form of a 3-tuple based statement that 
>> carries entailment consequences for a reasoner that understand the 
>> relation semantics. Through some "context lenses" the statement above 
>> could be accurate, in others totally inaccurate.
>> Conclusion, beauty lies eternally in the eyes of the beholder :-)



Kingsley Idehen	
Founder & CEO
OpenLink Software
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Received on Friday, 15 March 2013 21:06:55 UTC

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