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I would like to specify the radius used for the "MeanShift" Method of FindClusters. Where in the documentation can this information be found?

For a minimal example.

SeedRandom[123];
dis = MixtureDistribution[{1, 1, 1, 1}, {
    MultinormalDistribution[{-1, -3}, {{.5, 0}, {0, .5}}],
    MultinormalDistribution[{-3, 1}, {{.5, 0}, {0, .5}}],
    MultinormalDistribution[{1, 4}, {{.5, 0}, {0, .5}}], 
    MultinormalDistribution[{0, 0}, {{.5, 0}, {0, .5}}]}];
data = RandomVariate[dis, 500];
ListPlot[data, PlotRange -> All]

Mathematica graphics

ListPlot[FindClusters[data, Method -> "MeanShift"]]

Mathematica graphics

I want to tweak the radius such that it returns 4 clusters. I know I can use the "KMeans" method with a target of 4 clusters but I can't pre-select the clusters in all instances.

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1 Answer 1

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ListPlot[clusters = 
  FindClusters[data, 
   Method -> {"MeanShift", "NeighborhoodRadius" -> 0.5}]]

enter image description here

Length @ clusters

4

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3
  • $\begingroup$ I saw "NeighborhoodRadius" as an additional option for "NeighborhoodContraction". Did you just try and see or is there somewhere in the documentation that further options are given for Method options? $\endgroup$
    – Edmund
    Commented Feb 6, 2018 at 20:08
  • $\begingroup$ I saw it exactly there, and just tried it and it appears to work. $\endgroup$
    – corey979
    Commented Feb 6, 2018 at 20:12
  • $\begingroup$ Documentation needs some work on this function. $\endgroup$
    – Edmund
    Commented Feb 6, 2018 at 21:00

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