Fig. 7: Use PLS-DA and OPLS-DA model for salmon sample origin authenticity analysis based on mid-level data fusion strategy.
From: Data fusion and multivariate analysis for food authenticity analysis
a Original PLS-DA model plot created by using 522 salmon samples. b Sample origin authenticity analysis by using PLS-DA model (6 replicants of each sample). c Original OPLS-DA 3D plot. d OPLS-DA model shown the results of salmon origin authenticity identification (6 replicants of each sample); 6b and 6d show that when this sample was defined as “Norway”-light blue group, it was classified into the yellow group “Scotland.
