This paper establishes eight stylized facts on the evolution of the localization of economic activity across industries and regions in the EU-15 since 1980. Localization, which nests concentration and specialization, is measured by a Theil index. The stylized facts reveal a broad aggregate trend...

This paper solves one of the puzzles in the analysis of regional and industrial distributions of economic activity, the discrepancy between absolute and relative measures. It shows that the difference between an absolute and a relative Theil index of localization can be expressed in terms of...