Figure 6From: Principal component analysis-based unsupervised feature extraction applied to in silico drug discovery for posttraumatic stress disorder-mediated heart diseaseTwo-dimensional embedding of miRNA expression determined by PCA. Each dot represents a probe. Red dots indicate the 100 top-ranked probes with larger PC1 scores, selected as outliers based on the criterion of CPCAFE. A few probes with relatively large PC2 scores were excluded to allow selection of PC1 enhanced probes. See Additional file 2 for more detail.Back to article page