Fig. 2From: Feature selection of gene expression data for Cancer classification using double RBF-kernelsThe mapping with different γ1 and γ2 for Eq. (5). The first figure is for γ1 only, and the second figure is for the combination of γ2 and γ1. The horizontal axis is given by ‖x − xi‖2 and the vertical axis is given by \( {K}_{\gamma_1{\gamma}_2}\left(x,{x}_j\right) \)Back to article page