Fig. 1
From: Focused multidimensional scaling: interactive visualization for exploration of high-dimensional data
Schematic representation of the strategy for multidimensional scaling. a An example positive, symmetric matrix of distance values between four objects. b A dimension-reducing MDS representation of the distances in the matrix. c The stress equation for calculating the overall difference between the distances in the feature space (panel A, di,j) and the distances on the 2D plane (panel B, Di,j)