Figure 2 –

Distributions of the three abundances of the non-cancerous and glioma-infiltrated A-lines in the training set. a) The first abundance (α_k,1) is distributed at lower values for the glioma-infiltrated A-lines. b) The distribution of the second abundance (α_k,2) roughly mirrors that of the first abundance. c) The third abundance (α_k,3) is distributed at higher values for the glioma-infiltrated A-lines. d) Distributions of the feature vectors x_k = [α_k,1, α_k,3] for the non-cancerous and glioma-infiltrated A-lines (only 0.02 % of the total training set is shown for clarity).