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Fig. 1 | BMC Bioinformatics

Fig. 1

From: MetICA: independent component analysis for high-resolution mass-spectrometry based non-targeted metabolomics

Fig. 1

Matrix decomposition in non-targeted metabolomics. a X is an aligned data matrix from mass spectra of all the samples studied. The goal of ICA is to decompose X to a matrix S which contains independent sources and matrix A describes the linear mixture of theses source. b One row of X: the mass spectrum of one studied sample. c One column of X: aligned mass peaks for an annotated compound. d One independent source is plotted against another. The distribution of samples can be seen in the space described by these two sources. e represents the contribution of metabolites to these sources (loadings of metabolites)

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BMC Bioinformatics

ISSN: 1471-2105

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