Table 1.

Quantitative characteristics of the F-network and IS-network.

	TotalN	BothDirN	OutN	InN	TotalE	Mat-mi	Pre-mi	HostGenes
F-network	8,545	176	129	8,240	19,081	445	389	305
IS-network	8,307	140	106	8,061	16,913	364	277	246

TotalN – total number of non-isolated nodes. BothDirN – number of nodes with both in- and out-edges. OutN – number of nodes with out-edges but no in-edges. InN – number of nodes with in-edges but no out-edges. TotalE – total number of edges after removing loops and merging multiple edges. Mat-mi – number of mature miRNAs that induce intergenic interactions represented as network edges. Pre-mi – number of pre-miRNAs for these mature miRNAs. HostGenes – number of genes hosting these pre-miRNAs. Clearly, TotalN = BothDirN + OutN + InN, HostGenes = BothDirN + OutN.