Neocognitron Performance paper in Neuroprose

[David Lovell]

                 **DO NOT FORWARD TO OTHER GROUPS**

The following paper (10 pages in length) has been placed in the
Neuroprose archive and submitted to Neural Networks.
Any comments or questions (both of which are invited) should
be addressed to the first author: dlovell at s1.elec.uq.oz.au
Thanks must go to Jordan Pollack for maintaining this excellent service.

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               THE PERFORMANCE OF THE NEOCOGNITRON
        WITH VARIOUS S-CELL AND C-CELL TRANSFER FUNCTIONS

                   David Lovell & Ah Chung Tsoi
  Intelligent Machines Laboratory, Department of Electrical Engineering
         University of Queensland, Queensland 4072, Australia

When a neural network solution to a problem (e.g. handwritten
character recognition) is proposed, it is important to know if the
structure of the network and the function of the component neurons are
well suited to the task.  Recent research has examined the {\em
structure} of Fukushima's neocognitron and the effect that it has on
the classification of distorted input patterns.  We present results
which assess the classification performance of the neocognitron when
the {\em function} of the component neurons is altered.  The tests we
describe demonstrate that using S-cells with a sigmoidal transfer
function and modified activation function significantly enhances the
classification performance of the neocognitron.

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filename: lovell.neocog.ps.Z

FTP INSTRUCTIONS

     unix% ftp archive.cis.ohio-state.edu (or 128.146.8.52)
     Name: anonymous
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     ftp> cd pub/neuroprose
     ftp> binary
     ftp> get lovell.neocog.ps.Z
     ftp> bye
     unix% zcat lovell.neocog.ps.Z | lpr
(or whatever *you* do to print a compressed PostScript file)

-----------------------------------------------------------------------------
David Lovell - dlovell at s1.elec.uq.oz.au  |
                                         |
Dept. Electrical Engineering             | "Oh bother! The pudding is ruined
University of Queensland                 | completely now!" said Marjory, as
BRISBANE 4072                            | Henry the daschund leapt up and
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tel: (07) 365 3564                       |