Newsgroups: comp.ai.neural-nets
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!howland.reston.ans.net!pipex!uknet!bcc.ac.uk!bob
From: bob@bsm.bioc.ucl.ac.uk (Bob MacCallum)
Subject: Re: help needed with SNNS software
Message-ID: <1994Nov8.172609.30739@ucl.ac.uk>
Date: Tue, 8 Nov 1994 17:26:09 GMT
References: <1994Nov3.133459.8773@dmu.ac.uk>
Organization: University College London
X-Newsreader: TIN [version 1.2 PL2]
Lines: 43

Pamela A Hardaker (it4pah@dmu.ac.uk) wrote:
: Can anyone give advice about how to use or where to get information on how
: to use the SNNS software.

: I am using it for my final year project and I have managed to get the basics
: sorted out but I am not sure how to use a network once I have trained it.  
: ie how do I freeze the network with the weights and biases it has calculated
: through backprop and then feed in inputs only so that I can get the outputs
: for analysis.

: Any help greatly appreciated!!

: Pamela Hardaker
: EMail me on it4pah@dmu.ac.uk

I had a play with this once - the graphical interface seems to have
absolutely no way of running through a test set - so build the nets with
the GUI, but use snnsbat (which should come with it) as follows from a csh
shell script


snnsbat start.cfb 		# look at example *.cfb files
				# to see what to do here
				# basically load in a virgin net
				# but save the trained net under a
				# different name

while ($cycle<$maxcycle)

  snnsbat learn.cfb 		# saves updated net each time
				# and saves varous results files which
  @ cycle+=1			# you can extract your data

end

Sorry it's a bit grim...
I worked it out from the self-documented .cfb files - 
the manual's a pile of ...

good luck

Bob.

