NNDT

              Neural Network Development Tool
                  Evaluation version 0.98b
                       Björn Saxen
                          1994


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.

A fatal bug in NNDT 0.98 is fixed in 0.98b, see the file changes.txt

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 a year. Comments, bug reports 
and suggestions for improvements can be sent to:

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

Remember, this program comes free but with no guarantee!


Features and methods
--------------------
Two different training methods can be used, a batch method for "standard" off-line 
learning, and a real-time method which simulates on-line learning. 

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 the output signals during run. 
Network weights and node activations are easily examined and the weights can be 
modified by the user.

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


Installation
------------
Unzip NNDT.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 FILES.TXT for more details.


Bjorn Saxen
1994