clusterData by Brett Shoelson

Clusters an MxN array of data into an unspecified number (P) of bins. (data analysis, group data, cluster)

clusterData(data, sensitivity)

Gap statistics by Alessandro Crimi

Algorithm for cluster validity index, R. Tibshirani et al. 2001 (cluster, validity index, kmeans)

gap_statistics(data, num_clusters, num_reference_bootstraps...

test_gap_statistics(test_datas)

(simple) Tool for estimating the number of clusters by Kaijun Wang

12 validity indices, illustrate estimation of the number of clusters (cluster validation, clustering analysis, number of clusters)

[AR,RI,MI,HI]=RandIndex(c1,c2)

[indx,ssw,sw,sb]=valid_clusterIndex(data,labels)

daisy(x,vtype,metric)

Estimating the number of clusters via System Evolution by Kaijun Wang

estimate number of clusters for far clusters, small-larger clusters, slightly overlapping clusters (statistics, clustering, number of clusters)

SystemEvolution_energy(labels,Dist,dc,N,Ns,verbose)

SystemEvolution_findk(inter,inter2,intra,intra2,N,Ns,Hsep)

[A1,A2,B1,B2,A3,B3]=cluster_model(Dmatrix,Ua,Ub)