R-alpha: ANNOUNCE: new package snns

Friedrich Leisch (Friedrich.Leisch@ci.tuwien.ac.at)
Mon, 3 Feb 1997 15:08:01 +0100

Date: Mon, 3 Feb 1997 15:08:01 +0100
Message-Id: <199702031408.PAA19228@galadriel.ci.tuwien.ac.at>
From: Friedrich Leisch <Friedrich.Leisch@ci.tuwien.ac.at>
To: r-testers@stat.math.ethz.ch
Subject: R-alpha: ANNOUNCE: new package snns 


two new packages for R can be downloaded from our ftp-server at


They are
	tmpfile		get a unique name for a temporary file
	snns		R <=> SNNS Interface

tmpfile provides only one function (guess name and description or read
the help text :-)

Here's the README for the SNNS package:


`snns': R <=> SNNS Interface
Copyright (C) 1997 by Friedrich Leisch

This package provides the start for an R interface to the Stuttgart
Neural Network Simulator (SNNS). Currently it only provides means to
read and write pattern and result files of SNNS. Thus you can
preprocess your data using R (normalize, ...), then write an SNNS
pattern file, train a net on it and finally load the result back
into R to evaluate the outcome.

Currently there is no support for variable input/output dimensions,
but I'm planning to support these soon. Maybe there will also be an
interface for training nets directly from R in the future, but
currently I have no time for this. Any volunteers?

You need the following for this library to work:
1) my tmpfile R package:
	also provided at our ftp archive (see below)
2) perl
	used for parsing result and pattern files
	(res2r and pat2r in the cmd directory are perl scripts)
3) mkhead
	an SNNS utility for writing pattern headers, this should come
	with your copy of SNNS

The latest version of this package can always be downloaded from the

Please do not hesitate to send any comments or bug reports to the

                         Friedrich  Leisch                             
 Institut für Statistik                      Tel: (+43 1) 58801 4541
 Technische Universität Wien                 Fax: (+43 1)  504 14 98
 Wiedner Hauptstraße 8-10/1071      Friedrich.Leisch@ci.tuwien.ac.at
 A-1040 Wien, Austria             http://www.ci.tuwien.ac.at/~leisch
      PGP public key http://www.ci.tuwien.ac.at/~leisch/pgp.key

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