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RE: RDF Schema Explorer (Querying/Validating/Extending RDF models )

From: James Tauber <JTauber@bowstreet.com>
Date: Thu, 2 Nov 2000 23:23:14 -0500
Message-ID: <849D30D91B33D41181EB00B0D020AA8C6AC257@mail.hq.bowstreet.com>
To: "'Dan Brickley'" <danbri@w3.org>, Wolfram Conen <conen@wi-inf.uni-essen.de>
Cc: www-rdf-interest@w3.org, Geoff Chappell <geoff@sover.net>

FWIW, I recently started implementing Prolog-like inference in Python for
use with Redfoot[1]

We're doing a bug fix release now, but the inference stuff should start
appearing in the next couple of weeks.

James

[1] http://redfoot.sourceforge.net/

> -----Original Message-----
> From: Dan Brickley [mailto:danbri@w3.org]
> Sent: Tuesday, October 31, 2000 7:10 AM
> To: Wolfram Conen
> Cc: www-rdf-interest@w3.org; Geoff Chappell
> Subject: Re: RDF Schema Explorer (Querying/Validating/Extending RDF
> models)
> 
> 
> 
> (+cc: Geoff Chappell)
> 
> Hi Wolfram,
> 
> On Mon, 30 Oct 2000, Wolfram Conen wrote:
> 
> > Hello all!
> > 
> > Here is something that may complement some other 
> interesting services
> > (like Redland):
> > 
> > RDF Schema Explorer  at   
> http://wonkituck.wi-inf.uni-essen.de/rdfs.html
> 
> Very neat :-)
> 
> Did you ever see the 'Enabling Inferencing' page at mozilla.org?
> 
> http://www.mozilla.org/rdf/doc/inference.html
> 
> One of the projects there is Geoff Chappell's 'Mozillation' 
> system, which
> embeds the ever-useful SWI-Prolog engine inside the Netscape/Mozilla
> browser, encapsulated behind the RDFDataSource API augmented with an
> 'addRules(ruletext, rulemimetype)' method. (I've used the 
> same trick in
> Java to glue SilRI behind a simple Java RDF API while 
> exposing some logic
> capability).
> 
> Mozillation (http://209.198.94.130/mzpl/) might be an interesting
> environment for your RDF Schema Explorer idea; it's client 
> side and has
> access to browser user interface widgets etc. We can do similar 
> things using Javascript[1] in Internet Explorer too, though 
> the existence
> of RDF APIs and services in Mozilla adds some extra 
> possibilities. (I've a
> feeling Geoff had SWI-Prolog running as an ActiveX component 
> in IE at one
> point, though maybe  I'm mis-remembering...)
> 
> I'm going to try to persuade Dave to wrap SWI-Prolog behind a Redland
> interface (er... hi Dave :-) for similar reasons. I'm particularly
> intrigued by SWI's abiility (see [2]) to talk to relational
> databases, though not sure in practice how that'd interact with the
> problems you outline re querying RDF using Prolog's standard 
> resolution
> algorithm.
> 
> One other thought. For folk more familiar with SQL than 
> Prolog, it would
> be nice to expose an SQL-ish query interface along the lines of 
> http://web1.guha.com/rdfdb/query.html -- though I guess 
> that's a separate
> piece of work really...
> 
> Dan
> 
> [1] eg. 
> http://www.ilrt.bris.ac.uk/discovery/rdf-dev/rudolf/js-rdf/ove
rview.html
[2] http://www.geocities.com/SiliconValley/Bit/1116/PrologSQL.html
also XSB of course does this, 
http://www.cs.sunysb.edu/~sbprolog/manual2/
Received on Thursday, 2 November 2000 23:25:50 GMT

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