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fixed SOM asymmetrical convergence!

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@LuisSanchez25 LuisSanchez25 released this 15 Aug 17:41
· 44 commits to master since this release
c2ef7e2

While the SOM was converging before, the distribution of neurons in the data space always resulted in a distribution that did not match the density distribution of the data, leaving some cluster with only 1 or 0 overlapping neurons. This was found to be a bug in how we computed the neighborhoods which is now fixed!