Significance of correlations among features. Graphical visualization of the p-values of correlation coefficients between different features. The colors red to blue represent low to high p-values. The diagonal is shown in black to indicate that the self-correlations are not of interest.
Emmert-Streib et al. BMC Bioinformatics 2012 13:152 doi:10.1186/1471-2105-13-152