Figure 4.

Estimating the number of clusters using the sil procedure; results for simulated data. Plots are of median k versus k for each simulation model (medians are computed over 50 simulations). The true number of clusters is indicated by a filled plotting symbol.

Dudoit and Fridlyand Genome Biology 2002 3:research0036.1-research0036.21   doi:10.1186/gb-2002-3-7-research0036