In this paper, we quantitatively characterize the mechanism of collaborative knowledge creation at the individual researcher level a la Berliant and Fujita(2008) by using Japanese patent data. The key driver for developing new ideas is found to be the exchange of differentiated knowledge among...

This study shows evidence for collaborative knowledge creation among individual researchers through direct exchanges of their mutual differentiated knowledge. Using patent application data from Japan, the collaborative output is evaluated according to the quality and novelty of the developed...

This paper revisits a wide variety of existing economic geography models in a many-region setup. It investigates the spatial scale of agglomeration and dispersion intrinsic to each model. In our unified analytical framework, these models reduce to two canonical classes: one with a global...

This paper studies the theoretical properties of existing economic geography models with agglomeration and dispersion forces in a many-region setup, rather than their original two-region space, to investigate the spatial scale — global or local — of agglomeration and dispersion intrinsic to...

This paper studies the theoretical properties of existing economic geography models with agglomeration and dispersion forces in a many-region setup, rather than their original two-region space, to investigate the spatial scale — global or local — of agglomeration and dispersion intrinsic to...

In this paper, we quantitatively characterize the mechanism of collaborative knowledge creation at the individual researcher level a la Berliant and Fujita(2008) by using Japanese patent data. The key driver for developing new ideas is found to be the exchange of differentiated knowledge among...

This paper presents micro-econometric evidence for collaborative knowledge creation at the level of individual researchers. The key determinant for developing new ideas is the exchange of di�erentiated knowledge among collaborators. To stay creative, inventors seek opportunities to shift their...

We theoretically study a general family of economic geography models that features endogenous agglomeration. In many-region settings, the spatial scale---global or local---of the dispersion force(s) in a model plays a key role in determining the resulting endogenous spatial patterns and...

Literature from several phases of the career of Masahisa Fujita is surveyed chronologically, with a view toward future contributions in these areas. First we address the economic structure of the interior of a city with mobile consumers, adding production. Next we provide a critical discussion...

Literature from several phases of the career of Masahisa Fujita is surveyed chronologically, with a view toward future contributions in these areas. First we address the economic structure of the interior of a city with mobile consumers, adding production. Next we provide a critical discussion...