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Figure 2 | BMC Bioinformatics

Figure 2

From: Analysis with respect to instrumental variables for the exploration of microarray data structures

Figure 2

Dataset sources of variations. Decomposition of the dataset variability according to three sources of variations: "individual", "time" and "beverage". Ellipsoids representing the distribution of samples around the per-class centers of gravity are plotted on the factorial map of BGA (2 first discriminating axes). For each BGA, a Monte-Carlo permutation test is performed to assess the significance of the structures modelled in the analysis. The histograms show the distribution of 999 simulated values of the randomization test for BGA together with the observed value. Sim: ratio of between-class and total inertia.

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