- From: Kingsley Idehen <kidehen@openlinksw.com>
- Date: Tue, 16 Dec 2008 12:27:04 -0500
- To: Knud Hinnerk Möller <knud.moeller@deri.org>
- CC: Juan Sequeda <juanfederico@gmail.com>, "रविंदर ठाकुर (ravinder thakur)" <ravinderthakur@gmail.com>, "public-lod@w3.org" <public-lod@w3.org>, Semantic Web <semantic-web@w3.org>
On 12/16/08 10:44 AM, Knud Hinnerk Möller wrote: > > 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 Knud et al, I think Ravinder has started the process of fixing the current Semantic Web layer cake :-) Which is a very good thing (imho, but not seeking a Layer Cake discussion explosion). The tricky part is the interchangeable nature of "Discovery" and "Trust" in any such scheme layer-wise. For instance, do "Discovery" and "Trust" occupy Layers 4, 5 or either ? We ultimately want to reason against trusted data sources, but the serendipity quotient of discovery is a key factor re. the dynamic nature of "trusted sources". Since I am clearly thinking and writing (aloud) at the same time, I would suggest: Layer 4 - Discovery (with high Serendipity Quotient) Layer 5 - Trust (albeit inherently volatile) Kingsley > > > [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) >> <ravinderthakur@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 > > > -- Regards, Kingsley Idehen Weblog: http://www.openlinksw.com/blog/~kidehen President& CEO OpenLink Software Web: http://www.openlinksw.com
Received on Tuesday, 16 December 2008 17:27:42 UTC