Paper available by ftp

[Venkat Ajjanagadde]

FTP-host: archive.cis.ohio-state.edu
FTP-filename: /pub/neuroprose/ajjanagadde.aaai94.ps.Z

---------------------------------------------
The following paper is available via anonymous ftp from the neuroprose archive:
File: ajjanagadde.aaai94.ps.Z
6 pages



	Unclear Distinctions Lead to  Unnecessary Shortcomings: Examining the
	Rule vs Fact, Role vs Filler, and Type vs Predicate Distinctions from 
	a Connectionist Representation and Reasoning Perspective
	[To appear in Proc. of the AAAI-94]

			Venkat Ajjanagadde
		   Wilhelm-Schickard Institute
	 	 Universitaet Tuebingen, Germany



abstract:
This paper deals with three distinctions pertaining to knowledge 
representation, namely, the rules vs facts distinction, roles vs fillers 
distinction, and predicates vs types distinction. Though these distinctions 
may indeed have some intuitive appeal, the exact natures  of these  
distinctions are not entirely clear. This paper discusses some of the problems
that arise when one accords these distinctions a prominent status in a 
connectionist system by choosing the representational structures so as to 
reflect these distinctions. The example we will look at in this paper is the  
connectionist reasoning system developed by Ajjanagadde and Shastri 
(Ajjanagadde & Shastri, 1991; Shastri & Ajjanagadde, 1993). Their system 
performs an interesting class of inferences using activation synchrony to 
represent dynamic bindings. The rule/fact, role/filler, type/predicate
distinctions figure predominantly in the way knowledge is encoded in their 
system. We will discuss some significant shortcomings this leads to. Then, we 
will propose a much more uniform scheme for representing knowledge. The 
resulting system enjoys some significant advantages over 
Ajjanagadde & Shastri's system,  while retaining the idea of using synchrony to
represent bindings.



To retrieve the compressed postscript file, do the following:

unix> ftp archive.cis.ohio-state.edu
ftp> login: anonymous
ftp> password: [your_full_email_address]
ftp> cd pub/neuroprose
ftp> binary
ftp> get ajjanagadde.aaai94.ps.Z
ftp> bye
unix> uncompress ajjanagadde.aaai94.ps.Z
unix> lpr ajjanagadde.aaai94.ps 
      (or however you print postscript)