W3C home > Mailing lists > Public > www-rdf-interest@w3.org > December 2002

Re: KR & Issue/bug tracking terms in RDFS?

From: Federico Rozados <frozados@fibertel.com.ar>
Date: Thu, 19 Dec 2002 23:49:43 -0300
Message-ID: <000c01c2a7d2$784bcec0$5276e818@fibertel.com.ar>
To: "Richard H. McCullough" <rhm@cdepot.net>, "Danny Ayers" <danny666@virgilio.it>
Cc: "RDF-Interest" <www-rdf-interest@w3.org>
hello, my name is Federico and i am new in RDF. I want to know where can i find information about how to develop an application with rdf, and where can i find examples of applications develop with rdf.

thanks a lot,
  ----- Original Message ----- 
  From: Richard H. McCullough 
  To: Danny Ayers 
  Cc: RDF-Interest 
  Sent: Thursday, December 19, 2002 8:51 PM
  Subject: Re: KR & Issue/bug tracking terms in RDFS?

  KR/KE can interoperate in many ways. 

  I currently support Linux & Windows versions of KE.  
  You have all the facilities of those OSes at your disposal.  
  All of the external files are plain ASCII files, including KR's "relational databases".
  KE can easily be ported to many other systems, just by building Unicon on the other systems.

  A Java version of KR/KE is feasible, 
  since there is a Jcon variant of the Unicon language that I used to implement KE.  
  However, a Java version is very low on my priority list. 

  An XML interface is higher on my priority list, but I haven't done anything yet.

  P.S. Unicon is a high-level language developed by Clint Jeffery and supported at Sourceforge.net.
  Unicon is an extension of the Icon language developed by Ralph Griswold and supported at University of Arizona.
  Dick McCullough 
  knowledge := man do identify od existent done
  knowledge haspart proposition list
    ----- Original Message ----- 
    From: Danny Ayers 
    To: Richard H. McCullough 
    Cc: RDF-Interest 
    Sent: Thursday, December 19, 2002 2:33 PM
    Subject: RE: KR & Issue/bug tracking terms in RDFS?
       > You seem hesitant to use regular DB software. 

      Not hesitant, I simply think that this is a case where RDF offers advantages over e.g. using a relational DB system. An RDB or object DB or whatever might offer similar potential in terms of modelling, and an XML DB might also offer some potential for interoperability with other languages, but RDF allows the modelling plus major interop potential. The fact that the rest of my app uses RDF is also a consideration (!), but not an overriding one - I'm planning on using an RDB for text search stuff, where I think performance might be an issue if I went through RDF.

       > You might try using KR/KE, at least for prototype development.

      Is there a Java API? I could add an interface ;-)

       > KR tuples are a single line of text, with semicolon-separated fields.
       >  Each relation has a KR script (or a Unicon procedure) to define the meaning of its tuples.
       >  Queries of the resulting knowledge base use KR's "form-based" questions.

       > I have personally used KR for:
        >    my family genealogy knowledge base of over 1000 persons
         >   my expense records & summaries
       > The relation definitions for both of these applications are included on my web site.
       >  http://www.volcano.net/~rhm/knowledge/application/Genealogy
       >  http://www.volcano.net/~rhm/knowledge/application/ExpenseRecord 

       It certainly looks a versatile system, and it's obvious a lot of  thought & effort has gone into it. But for me to use KR & your apps, it would have to be possible to easily exchange data or otherwise interoperate with it using the (data  & programming) languages in widespread use, and/or offer really significant advantages over other systems. Anything with a Java, Python or Perl API and/or an XML serialization has a head start over everything else in terms of adoption, irrespective of any other merits.

Received on Thursday, 19 December 2002 22:06:21 UTC

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