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Re: [ontolog-forum] entropy

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Mills Davis <lmd@xxxxxxxxxxxxxx>
Date: Wed, 29 Aug 2007 10:37:57 -0400
Message-id: <9A0E90F5-CD72-44A4-A634-210D97FCE4F6@xxxxxxxxxxxxxx>
Paola,

Here is the link to a recent PhD thesis by J. van Diggelen entitled Achieving Semantic Interoperability in Multi-agent Systems: A Dialogue-based Approach [pdf]

Also, on his publications page, there are a couple presentations and a software download for Anemone, the implementation of the thesis.


Mills Davis

On Aug 29, 2007, at 9:54 AM, Deborah MacPherson wrote:

Hi Paola -

Yes, as you say below but it seems to me Ravinder also wants a way to recognize ontologies when they are initially encountered. Would this have to do with "where it fits" in the framework including its degree of uncertainty?

Deb

On 8/28/07, paola.dimaio@xxxxxxxxx <paola.dimaio@xxxxxxxxx > wrote:
sorry, slighly amended post

On 8/29/07, paola.dimaio@xxxxxxxxx <paola.dimaio@xxxxxxxxx> wrote:
> Hi Deb
>
> Thanks for forwarding Ravinders question.
> You mean its similar to my question about how to go about adding new
> dimensions to the framework?
>
> The suggestion of adding 'entropy' to the framework comes from the
> discussions around which there seems to be some agreement, that
> ontologies should  model 'change' - from simple change of usage of
> words and terminologies during time, to the more complex changes of
> states of entities, to the more ambitious modelling of 'unknown
> variables'
> briefly touched upon in a discussion with Ed (have a generic class of
> 'unpredictable' random variables in any ontological model to represent
> at least symbolically 'uncertainty') -
Probably also partly answers the question of why bridges fall
>
> Entropy seems to abstract quite well the principle of change, without
> making any prescription at this stage on how change should be
> modelled, which probably depends on the domain being addressed.
> The current (hm, yesterday morning asia pacific time) entry on
> wikipedia gives a good enough introduction, with a clear reference to
> S in information theory
>
> http://en.wikipedia.org/wiki/Entropy
>
> The less organzeds is a system the higher its entropy - lots of
> changes going on in the web
>
>
> So maybe I was thinking of 2 questions (or more)
>
> 1.is entropy a suitable dimension to be added to the framework to
> summarize the discourse on change
> 2. how do we 'change' the framework over time? (that matches both 1,
> as well as Ravindra's problem - which maybe others can address
> separately)
>
> Cheers
>
> PDM
>
>
>
> On 8/29/07, Deborah MacPherson <debmacp@xxxxxxxxx> wrote:
> > Hi Paola,
> >
> > Please see the message below forwarded from Ravinder Thakur on
> > Linking-open-data at MIT. Will his problem be addressed in the framework?
> > Does anyone have suggestions for Mr. Thakur and his collaborators at linking
> > open data?
> >
> >  Thank you,
> >
> >  Deborah
> >
> > Deborah L. MacPherson
> > Projects Director, Accuracy&Aesthetics
> > Specifier, WDG Architecture PLLC
> >
> > ---------- Forwarded message ----------
> > From: "Ravinder Thakur" < ravinderthakur@xxxxxxxxx>
> > To: "Linking Open Data" < linking-open-data@xxxxxxxxxxxxxx >
> > Date: Sun, 26 Aug 2007 22:18:09 -0700
> > Subject: [Linking-open-data] RDF/SPARQL and consistent metadata about
> > content/structure of ontologies
> >
> >  Hi,
> >
> > For the past few days i have been trying to look at RDF/SPARQL from query
> > designing point of view. What basically i have been trying to do is to take
> > very simple /user/ queries (" e.g. Bill Gates net worth") and try to see if i
> > can automatically create the corresponding queriers in SPARQL. The versatile
> > nature of domain of data stored in RDF means that data from every domain
> > would have its own ontology. And the knowledge/understanding of ontology is
> > very much prerequisite to understanding the data based on that particular
> > ontology.
> >
> > This seems a little bit of problem to me. This means that we cannot build
> > queries until we know that structure of ontologies and since there might be
> > thousands of ontologies how are we supposed to know about all the
> > ontologies. Moreover everyday new ontologies will be added to the web.? IS
> > the assumption that the dust will settle after some time and we will have
> > only very few good ontologies about the world ? This seems highly
> > restrictive to me.
> >
> > Obviously I want to write a query processor that is independent on the
> > ontology that the data i am looking on is based upon. I don't want to know
> > pre hand what ontology might correspond to the data i am looking . What i am
> > looking for some consistent way to represent the /METADATA/ about the
> > structure and content about ontologies so that from the metadata about the
> > ontology, i can automatically know about the structure and relevance of the
> > ontology for the query i have in hand.
> >
> > Has anybody faced the problem i have highlighted ? or what i am saying is
> > stupid :) and there is some simple way out there ?
> >
> >  Thanks
> > Ravinder Thakur
> >
> >
> > On 8/27/07, paola.dimaio@xxxxxxxxx < paola.dimaio@xxxxxxxxx> wrote:
> > >
> > > When is the next update of the framework due?
> > > I propose we add 'entropy' as a new dimension
> > >
> > > Do I have to write something up? Or are the discussions so far on the
> > > need to model
> > > 'change' sufficient?
> > >
> > >
> > > --
> > > Paola Di Maio
> > > School of IT
> > > www.mfu.ac.th
> > > *********************************************
> > >
> > >
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> >  On 8/27/07, paola.dimaio@xxxxxxxxx < paola.dimaio@xxxxxxxxx> wrote:
> > >
> > > When is the next update of the framework due?
> > > I propose we add 'entropy' as a new dimension
> > >
> > > Do I have to write something up? Or are the discussions so far on the
> > > need to model
> > > 'change' sufficient?
> > >
> > >
> > > --
> > > Paola Di Maio
> > > School of IT
> > > www.mfu.ac.th
> > > *********************************************
> > >
> > >
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> > >
> >
> >
> >
> > --
> > *************************************************
> > Deborah L. MacPherson
> > Projects Director, Accuracy&Aesthetics
> > Specifier, WDG Architecture PLLC
> >
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>
> --
> Paola Di Maio
> School of IT
> www.mfu.ac.th
> *********************************************
>


--
Paola Di Maio
School of IT
www.mfu.ac.th
*********************************************

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Mills Davis
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