Download A Theoretical & Practical Introduction to Self Organization using JNNS

2.4.2. Weight Map.
The Weight Map (WM) Display is employed to analyze the weights distribution of a
network or to see the development of weights during the learning stage. The X axis
represents the source units while the Y axis represents the target units of the links
(Remember that a link connects source units to hidden or output units).
To make use of this tool, follow the steps below:
1. 1. Open the ViewÖWeights Window.
2. The WM Display shows weights as coloured rectangles, (Fig. 13).
3. Zoom in and/or out as needed to check the weights distribution.
Fig. 13. Weight Map Display
2.4.3. Kohonen Map.
It shows the distances between weight vectors of neighbour units. The colouring
involved can be configured in the ViewÖDisplay SettingsÖSOM window tab. This tab
is only visible if the Kohonen Map window is focused. To make use of this tool, follow
the steps below:
Fig. 14. Kohonen Map Display Example.
1. Focus the Kohonen Map window (Display).
2. Open the ViewÖKohonen window.
3. It shows the colour scale defining distances in the left side.
A Theoretical & Practical Introduction to Self Organization using JNNS
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