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Re: objects to facts to links to LOD to ???

From: Knud Hinnerk Möller <knud.moeller@deri.org>
Date: Tue, 16 Dec 2008 15:44:41 +0000
Cc: "रविंदर ठाकुर (ravinder thakur)" <ravinderthakur@gmail.com>, "public-lod@w3.org" <public-lod@w3.org>, "Semantic Web" <semantic-web@w3.org>
Message-Id: <BA96D0C1-8F09-42A6-9367-CB761F55979F@deri.org>
To: Juan Sequeda <juanfederico@gmail.com>

Hi,

I'm not sure about the discovery part - that seems to be more a meta- 
layer with data describing linked datasets (VoiD [1]). However, I  
agree that inference would have to be in layer 4 and up. Things like  
non-explicit object consolidation, vocabulary and ontology mapping,  
etc. will be necessary to integrate the data even beyond the point of  
explicit links.

@ravinder: I like the three layers you propose - is there a reference  
for that, or did you come up with it just now? I'd love to reference  
it in my PhD thesis!

Cheers,
Knud


[1] http://semanticweb.org/wiki/VoiD
On 15.12.2008, at 20:54, Juan Sequeda wrote:

> Hi Ravinder,
>
> Interesting points. I would say that Layer 4 would be "discovery".  
> Furthermore, this would be an inference layer that would allow  
> discovery. After having linked data, applications will be able to  
> discover new data. So maybe layer 4 and up are part of the  
> applications that enable discovery. Anyways, that is what I see what  
> the semantic web is about: discovery and serendipity.
>
> Juan Sequeda, Ph.D Student
> Dept. of Computer Sciences
> The University of Texas at Austin
> www.juansequeda.com
> www.semanticwebaustin.org
>
>
> On Sat, Dec 13, 2008 at 11:16 AM, रविंदर ठाकुर (ravinder thakur) <ra 
> vinderthakur@gmail.com> wrote:
> Hello Friends,
>
>
> We have now reasonably good repository of linked data but i am not  
> able to find any good application being made out of it. From the  
> dicsussion on these mailing lists and other places, i got the  
> feeling that everyone in semantic world thinks that semantic web is  
> something big but unfortunately nobody is able to think of an  
> application for _general public_ that can be based on semantic web  
> data we have currently.
>
>
> This led me to wonder that are there any more layers of information  
> organization missing in the semantic web stack that are needed to  
> generate good usable semantic web data which can be more useful for  
> generating useful semantic apps . Few of the concepts i was thinking  
> for upper layers to implement were like categorization, set  
> formation(eg MIT passout in 2002), set intersection, etc. With these  
> higher level layers I was hoping to build a system to find higher  
> level relations say between places with low cancer rates and the  
> food people eat there or any perticular gene found in such people.
>
>
> The current semantic stack looks like this:
> .....
> layer5 (???)
> layer4 ( ???)
> layer3 linked facts (isa(mars,planet) AND partof(mars,solarsystem)  
> AND mass(mars,6566.1255kg))
> layer2 facts (isa(mars,planet), isa(cow,animal))
> layer1 objects (eg cow, mars, man)
>
>
>
> Are there any other thoughts on the need of layers above the layer 3  
> (linked data ) or these layers will be defined by the respective  
> apps developers ? Even if there isn't any need, i would atleast like  
> to have a discussion on the kind upper level layers we might need :)
>
>
> thanks
> ravinder thakur
>
>
>

-------------------------------------------------
Knud Möller, MA
+353 - 91 - 495086
Smile Group: http://smile.deri.ie
Digital Enterprise Research Institute
National University of Ireland, Galway
Institiúid Taighde na Fiontraíochta Digití
Ollscoil na hÉireann, Gaillimh
Received on Tuesday, 16 December 2008 15:45:26 GMT

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