Resumen de Relatedness and technological change in cities: : the rise and fall of technological knowledge in US metropolitan areas from 1981 to 2010
Ron Boschma, Pierre-Alexandre Balland, Dieter Franz Kogler
This article investigates by means of US Patent and Trademark Office (USPTO) patent data whether technological relatedness at the city level was a crucial driving force behind technological change in 366 US cities from 1981 to 2010. Based on a three-way fixed-effects model, we find that the entry probability of a new technology in a city increases by 30% if the level of relatedness with existing technologies in the city increases by 10%, while the exit probability of an existing technology decreases by 8%.
