Gerald, Silverberg; Bart, Verspagen - United Nations University-Maastricht Economic Research … - 2005
We extend an earlier model of innovation dynamics based on invasive percolation by adding endogenous R&D search by … the log-normal distribution are varied, the relative rates of aggregate innovation switches between the two regimes. The … SO regime has higher innovation rates, other things being equal, for lower means or higher standard deviations of the …