strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 …-1994. The interaction of this pre-existing network structure with patent growth in upstream technology fields has strong … innovation for a particular technology class to build on, then that technology class innovates more. …

Innovation and technological progress are the key determinants of long-run economic growth and welfare. Therefore, an … important question is, how can public policy encourage more innovation? In this chapter, I review some of the empirical findings … from various recent studies on innovation and firm dynamics that can shed light on the design of innovation policy. The …