NNDT

              Neural Network Development Tool
                  Evaluation version 0.99
                       Björn Saxen
                          1994

(See file changes.txt for changes and 
bug fixes since previous version.)

The NNDT software is as a tool for neural network training. The user
interface is developed with MS Visual Basic 3.0 professional edition. 
DLL routines (written in C) are used for most of the mathematics. The 
program can be run on a personal computer with MS Windows, version 3.1.


Evaluation version
------------------
This evaluation version of NNDT may be used free of charge for personal 
and educational use. The software certainly contains limitations and bugs, 
but is still a working version which has been developed for over one year. 
Comments, bug reports and suggestions for improvements can be sent to:

   	bjsaxen@abo.fi
or
	Bjorn Saxen
	Heat Engineering Laboratory
	Abo Akademi University
	Biskopsgatan 8
	SF-20500 Abo
	Finland
 

Remember, this program comes free but with no guarantee!


Features and methods
--------------------

The network algorithms implemented are of the so called supervised type. 
So far, only algorithms for multi-layer perceptron (MLP) networks of 
feed-forward and recurrent types are included. The MLP networks are 
trained with the Levenberg-Marquardt method.

The training requires a set of input signals and corresponding output 
signals, stored in a file referred to as pattern file. This is the only 
file the user must provide. Optionally, parameters defining the pattern 
file columns, network size and network configuration may be stored in a 
file referred to as setup file. 

NNDT includes a routine for graphical presentation of output signals, 
node activations, residuals and weights during run. The interface also 
provides facilities for examination of node activations and weights as 
well as modification of weights.

A Windows help file is included, help is achieved at any time during 
NNDT execution by pressing F1.


Installation
------------
Unzip NNDTxx.ZIP to a separate disk or to a temporary directory e.g. 
to c:\tmp. The program is then installed by running SETUP.EXE. 
See INSTALL.TXT for more details.


Bjorn Saxen
1994