Keywords :
Clustering, intrinsic dimensionality, minimum spanning tree, multidimensional scaling, nonlinear mapping, pattern recognition, topological dimensionality.; Algorithm design and analysis; Clustering algorithms; Computer science; Data analysis; Displays; Multidimensional systems; Pattern recognition; Psychology; Psychometric testing; Shape; Clustering, intrinsic dimensionality, minimum spanning tree, multidimensional scaling, nonlinear mapping, pattern recognition, topological dimensionality.;