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Re: A new proposal for ISSUE-39 ConceptualMappingLinks

From: Antoine Isaac <aisaac@few.vu.nl>
Date: Mon, 10 Dec 2007 21:26:05 +0100
Message-ID: <475DA0DD.6050807@few.vu.nl>
To: Stella Dextre Clarke <sdclarke@lukehouse.demon.co.uk>
CC: 'Leonard Will' <L.Will@willpowerinfo.co.uk>, public-swd-wg@w3.org, public-esw-thes@w3.org

Hi Stella,

>> The only situation where I can think of problem is when applications 
>> deal with purely extension-based links that have no clear 
>> thesaurus-like 
>> semantic link, like the "France"/"war" I used in [2]. But 
>> even if this 
>> kind of link cannot be made relatedMatch (which can also be 
>> argued, in 
>> fact) we can hypothesize that these would be very specific 
>> applications. 
>> And we would encourage them to define their own 
>> relationships. Which by 
>> the way they are likely to do, if they focus only on 
>> documents, e.g. by 
>> introducing different levels of extensional overlap (30%, 50%, etc)
> Relationships defined on the basis of a particular document set or
> collection or pair of collections have some very useful applications, it
> seems to me, but these are different from what I imagine SKOS is
> generally for. If a relationship is a "property" of pairs/groups of
> concepts within a scheme, and a mapping is the same type of thing
> applying to pairs/groups of concepts where the concepts come from more
> than one scheme, then a match that takes into account the occurrence in
> a document collection is a property of this system as a whole, that is
> to say, it is a property relating to
> one-or-more-schemes-plus-one-or-more-document-collections. So the
> document collection(s) to which it is being applied need to be included
> in the scope statement of the data being communicated. And that makes it
> all more complicated. 

You are right!

> Furthermore, the applications where statistical
> occurrence data are useful tend to be free text applications, whereas I
> think of SKOS concepts as useful mostly in the context of indexed
> collections. Sorry, no time to express this carefully and rigorously,
> but I hope the general drift of the argument makes sense.

Yes, it does. Even though I have been involved in experiments showing 
that (at least in some contexts) extensional information brings some 
potentially useful similarity information [1]



[1] http://www.few.vu.nl/~aisaac/papers/STITCH-Instance-ISWC07.pdf
Received on Monday, 10 December 2007 20:41:57 UTC

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