I am trying to understand (and implement) how to visualize nodes in SOM. If I train it on some high-dimensional data, the only thing i can do is calculate distance between nodes in high dimensional space. I would like to plot some nice scatter-plot or even grid, but how?
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what kind of data do you have ? Maybe you can use (could have used) PCA to reduce its dimensionality for viewing – Ciprian Tomoiagă Dec 03 '16 at 04:26