Figure 7
Comparison of Correlation Coefficient Heatmaps: On the left, the diagonal heatmap illustrates the pairwise correlations among features before pruning. On the right, the diagonal heatmap demonstrates the correlations after pruning. The color scale represents the strength of the correlation, with blue indicating negative correlation, red indicating positive correlation, and white representing no correlation. We created the correlation heatmap using the ‘ggplot2’ package in R version 4.3.1 (Wickham, 2016).
