                          NNDT

              Neural Network Development Tool
                  Evaluation version 1.3
                       Bjrn Saxen
                          1995


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:

   	bjorn.saxen@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!

A user's guide for NNDT is delivered in PostScript format. The 
document is split into three parts and compressed into a file 
called MANUAL.ZIP. Due to many bitmap figures included, the total
size of the uncompressed files is very large, approx 1.5M.


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

The network algorithms implemented are of the so called supervised type. 
So far, 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.


