Fig. 5 | Scientific Reports

Fig. 5

From: Raman spectroscopy and machine learning for early detection of gastric cancer and Helicobacter pylori with gastric juice

Fig. 5

Raman spectral analysis of gastric juice for HP diagnosis. (A) Average Raman spectra curves of the HP + and HP- groups. The shaded area in each group represents the standard deviation. (B) Multivariate visualization analysis of Raman spectra using Orthogonal partial least squares discriminant analysis (OPLS-DA). (C) Dimensionality reduction of Raman spectra using Principal component analysis (PCA). (D) Dimensionality reduction of Raman spectra using linear discriminant analysis (LDA).

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