Figure 6
From: Improved machine learning method for analysis of gas phase chemistry of peptides
Linear regression model. This shows "residuals vs. prediction" in the linear regression model. The blue cluster is the result of regression on data for the N4 bond and the red cluster is the same but with data for the N2 bond. The N2 cluster has a clear spread beyond the N4 cluster center, suggesting the N2 data is not as well predicted as the N4 data. Similar results were observed with the N5 data (not shown).