[comp.ai] Pandemonium

rolfl@ulrik.uio.no (Rolf Lindgren) (06/05/90)

I need pointers to information regarding Pandemonium, a theory about letter
recognintion. A running C or Lisp program in the Public Domain would be
excellent.

Rolf Lindgren		| 	"The opinions expressed above are 
612 Bjerke Studentheim	|  	 not necessarily those of anyone"	
N-0589 OSLO 5		|  email: rolfl@ifi.uio.no  rolfl@humanist.uio.no 

bdp@ely.cl.cam.ac.uk (Barney Pell) (06/06/90)

In article <ROLFL.90Jun5082248@ulrik.uio.no>, rolfl@ulrik.uio.no (Rolf
Lindgren) writes:
|> 
|> I need pointers to information regarding Pandemonium, a theory about letter
|> recognintion. A running C or Lisp program in the Public Domain would be
|> excellent.
|> 
|> Rolf Lindgren		| 	"The opinions expressed above are 
|> 612 Bjerke Studentheim	|  	 not necessarily those of anyone"	
|> N-0589 OSLO 5		|  email: rolfl@ifi.uio.no  rolfl@humanist.uio.no 

Here's my summary of the program, described in the following:

D.W.J. Corcoran, Pattern Recognition.  Penguin, 1971.
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Selfridge's Pandemonium (p. 109):

Demons 'shriek' corresponding to closeness to input pattern.
1) Allows computer to choose most useful features.
2) Allows features to be examined simultaneously.
3) Allows feature analyzers to present analogue output to decision maker.

     X		decision demon
   XXXXX	cognitive demons
    XXX		computational demons
    XXX		data or image demons

When correct response is made:
a) Features examined by computational demons are given more or less weight.
b) Some demons are rejected, others take their place.
c) Overall reorganization by gradual accumulation of evidence from feedback.

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   Barney Pell
   Computer Laboratory
   University of Cambridge
   phone:  (0223) 334622
   e-mail:  bdp@cl.cam.ac.uk

Life is a metaphor for GO.
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