A Fault Tolerance Optimization Model of the China Railway Geographic Network Topological Structure

Table 1

Degree distribution of the China Railway network.

Degree	1	2	3	4	5	6	7	8	9	10
Degree proportion of railway network in 2008	0.2077	0.2524	0.2204	0.1725	0.0895	0.0383	0.0096	0.0064	0.0032	—
Degree proportion of railway network in the “Twelfth Five-Year Plan”	0.1024	0.1667	0.2571	0.2262	0.1429	0.0405	0.0238	0.0214	0.0119	0.0071