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From: manj@brand.usc.edu (B. S. Manjunath)
Newsgroups: comp.ai.neural-nets
Subject: Re: request for philosophic reactions to connectionism
Keywords: ART, Grossberg
Message-ID: <16722@usc.edu>
Date: 23 Apr 89 19:48:13 GMT
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Reply-To: manj@brand.usc.edu (B. S. Manjunath)
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kortge@portia.stanford writes:
>>In article <1@bucsb.UUCP> adverb@bucsb.bu.edu (Josh Krieger) writes:
>>Please stop dismissing ART out of ignorance!
>>

>[deleted]

 >Good analogy.  Notice that even though I don't understand microprocessor
 >intricacies, I can still program a computer.  Grossberg seems very
 >concerned with the physical implementation of his systems, and thus
 >includes a lot of complicated mathematical detail.  There's nothing
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 >objectively wrong with this, but a lot of it may be unneccessary for
 >describing the essential information-processing properties, and keeps
 >"ignorant" people at a distance.
  
 Unfortunately ! Also I would like to add that most of it is unnecessary 
too . All the analysis that is carried out in the paper (BTW I am referring 
to the paper by Carpenter and Grossberg, " A Massively Parallel ....",
CVGIP 1987, pp. 54 - 115 = -61 !) makes many simplifying assumptions.
The STM dynamics is completely ignored and it is assumed to be in the 
equilibrium state whenever a pattern is presented. See for eg. Section 18
( Yes - Eighteen/27) of the paper.

>The advantages:
> [4 advantages deleted]
>>  5) ART has a vast amount of solid psychological and biological
>>     evidence for its existence.
        
	This probably is the strongest point in favour of ART. However I am 
yet to completely "decode" the ART2 ( For analog patterns). Simulations 
seem to work but I see no reason for so many layers within F1. I understand
that the system does some kind of normalization of the input patterns but 
I fail to see why so many of them are needed. Could anyone comment on this ?

 >Chris Kortge

 bs manjunath
 manj@brand.usc.edu