Figure 1

Example of SOM training using metabolic pathways (bSOM) with an artificial data set. a) ρ matrix; b) α=0.00; c) α=0.50; d) α=1.00 (the two dimensions in this simplified example could represent measures for two different treatments in real data). Each cluster found by the algorithm is indicated with a different color (red, green, cyan and purple). Groups of biologically related points are indicated with different markers (squares, diamonds, circles and triangles).