Fig. 1
From: Meta-learning-based Inductive logistic matrix completion for prediction of kinase inhibitors
The samples statistics for 388 protein kinases in KinaseDB. The figure shows that the compounds statistics follow an obvious long tail distribution, i.e., only few kinases have many samples, majority of kinases just have a small number of samples. It is worth noting that a large number of kinases (303, 77%) have a small number of samples with the range of 1–99. Detailed information about the protein kinases and sample statistics can be found in Additional file 1: Table S.1