Sodium scan was mentioned in a recent paper by Sheridan
(one way to delete the contribution of one heavy atom from the molecular encoding; provided that Na was not present in any molecule from the training set).
Sheridan, R. P. (2019). Interpretation of QSAR Models By Coloring Atoms According to Changes in Predicted Activity: How Robust Is It?. Journal of chemical information and modeling.
Sodium scan was mentioned in a recent paper by Sheridan (one way to delete the contribution of one heavy atom from the molecular encoding; provided that Na was not present in any molecule from the training set).
Sheridan, R. P. (2019). Interpretation of QSAR Models By Coloring Atoms According to Changes in Predicted Activity: How Robust Is It?. Journal of chemical information and modeling.