- From: Dan Brickley <danbri@w3.org>
- Date: Tue, 31 Oct 2000 07:10:08 -0500 (EST)
- To: Wolfram Conen <conen@wi-inf.uni-essen.de>
- cc: www-rdf-interest@w3.org, Geoff Chappell <geoff@sover.net>
(+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/overview.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 Tuesday, 31 October 2000 07:10:15 UTC