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TUTOR.ASC
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1991-07-25
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Back Error Propagation Simulator (BPS)
Brief Tutorial
by
Emilio A. Apey
Copyright George Mason University
September 1989
Table of contents
1. Introduction ......................................................................... 3
2. Walk-through an example .............................................. 3
Figure 1 ................................................................................ 4
Figure 2 ................................................................................ 5
3. Main menu ............................................................................. 7
3.1 Build/load network ............................................... 8
3.2 Specify training set ............................................. 10
3.3 Edit and view menu ............................................. 10
3.4 Save network ........................................................... 12
3.5 Find error .................................................................. 12
3.6 Number of epochs .................................................. 12
3.7 Cycle until converges ......................................... 13
3.8 Adjust learning parameters ............................ 13
3.9 Production menu ................................................... 14
3.10 Learn .......................................................................... 15
3.11 Transfer function options menu .................... 16
4. Formulas .............................................................................. 17
1) Introduction
The BPS program simulates a multilayer neural network using back
error propagation as learning algorithm. This simulator is intended for
educational purposes and depends heavily on user interaction. It is
important for the user to be familiar with the back error propagation
algorithm before using BPS; in this way, the user can understand what
the simulator is doing.
In this brief "tutorial" most of the features of BPS will be
demonstrated by building a simple example. Figure 1, overview of BPS,
can be very useful in becoming familiar with BPS.
Also, it is h, d famd