. Author manuscript; available in PMC: 2018 May 28.

Published in final edited form as: J Chem Inf Model. 2017 Oct 13;57(11):2657–2671. doi: 10.1021/acs.jcim.7b00216

Table 1.

The statistics of four independent drug-target interaction networks used for network model building and validation.

Data set	N_D	N_T	N_DTI	Sparsity (%)
Global network	2,388	751	7,314	0.41
Validation set A	714	466	3,164	0.95
Validation set B	375	318	1,164	0.98
Validation set C	348	386	3,352	2.50

N_D: the number of natural products, N_T: the number of targets, N_DTI: the number of drug-target interactions, Sparsity: the ratio of N_DTI to the number of all possible drug-target interactions.