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Table 2 Statistics for the overall and the two subperiod networks: 2000–2005 (period 1) and 2006–2011 (period 2)

From: Different network typologies in patenting activity of academic inventors through time: the case of Italian chemists in the period 2000–2011

  Statistics
  Overall Period 1 Period 2
Nodes 545 251 367
 Of which assignee (firms, PROs, universities) 96 52 60
Density 0.014 0.026 0.020
# Link 148240 31365 67161
# of components 27 26 31
# of nodes in giant component (% nodes) 276 (50.6 %) 38 (15.2 %) 51 (13.9 %)
Average degree 15.4 13.3 15.0
Network centralisation 6.3 % 14.3 % 6.2 %