Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2105-15-201/MediaObjects/12859_2014_Article_6477_Fig4_HTML.jpg)
Training neuron n x , y . (a) The neighborhood within range r i is trained (colored gray). (b) Certain tiles are already reserved (colored red) in the RSOM algorithm, item t therefore trickles outwards to the best matching free spots (outlined).