distribution and the evolution of knowledge complexity across U.S. cities from 1975 to 2004. We build on the 2-mode structural … network analysis proposed by Hidalgo and Hausmann (2009) to develop a knowledge complexity index (KCI) for Metropolitan … find that knowledge complexity is unevenly distributed across the U.S. and that cities with the most complex technological …

departments of innovative manufacturing and service companies, our results show that while knowledge complexity, per se, exerts a …