Table 3. Network characteristics for the six entity networks.

Indicators	Disease		Drug		Gene
	PageRank	Betweenness	PageRank	Betweenness	PageRank	Betweenness
No. of Nodes	41	55	77	58	67	47
No. of Edges	79	64	93	63	86	40
Avg. Degree	3.85	2.33	2.42	2.17	2.57	1.7
Avg. Weighted Degree	2210	836	156	46	124	6
Avg. Path Length	2.79	3.34	3.43	3.2	3.39	3.06
Graph Density	0.096	0.043	0.032	0.038	0.039	0.037
Modularity	0.19	0.1	0.71	0.59	0.46	0.54
No. of Communities	2	7	7	8	6	10
Avg. Clustering Coefficient	0.11	0.44	0.49	0.51	0.48	0