The 10 features captured by persistence fingerprint.

The source of each feature is represented by a 4-tuple, consisting of athe element of protein atoms used in the IPC, bthe element of ligand atoms used in the IPC, cthe dimension of the homology group where the IPC is derived from, and dthe interval (or bin) where the IPC is integrated over to yield the value of this feature. For example, the first row describes that the first component of the vector is calculated by integrating an IPC over the interval [9.5,10.0], where the IPC is constructed using the carbon atoms of the protein and the carbon atoms of the ligand, and the persistence of homology groups of dimension 1 is measured.