Fig. 3From: Feature selection using distributions of orthogonal PLS regression vectors in spectral dataThe empirical null distribution of the realized \(\hat {\beta }_{OPLSb,i}\) for the mass spectrometry data is shown with two-sided 95% confidence intervals by red rectangles. The black dots mean significant m/z variables by the permutation testing of OPLS regression. The yellow dots and the red crosses illustrate siginificant variables by the Lasso and the FDR, respectivelyBack to article page