Re: visual query tools: SHOE/PARKA applet

On Fri, 26 May 2000, Dan Brickley wrote:

> I just stumbled across a rather neat Java-based query demo on the
> SHOE/PARKA site. 
> 
> http://www.cs.umd.edu/projects/plus/SHOE/binpiq.html (older binary-relations)
> http://www.cs.umd.edu/projects/plus/SHOE/piq.html (new n-ary relation)

Thanks, Dan.  PIQ is the Java incarnation of Parka's graphical query
mechanism.  There is a nice Lisp implementation and also a C version.
Parka was originally a semantic network and later became n-ary, partially
in response to SHOE's needs.  You are correct, SHOE started out as a
binary relation language and later evolved to n-ary relations.

As a graphical interface, I think PIQ would present a very good model for
RDF.

Sean