Changes

Proposed title: #A new method for estimating the pattern and efficiency of agglomeration with an application to venture-backed startups.Public #A new method for identifying and mapping spatial agglomeration with an application to venture-backed startups Note: We had discussions on mapping vs. delineating, startups vs. ecosystem, and other tradeoffs.  4 or 5 value-added points by Ed:*Transform the problem of how to find and delineate agglomerations into the problem of selecting the right lens with which to view agglomerations*Endogenously determine the location and boundaries of agglomerations**Examine agglomeration at any scale, including microgeographic scales (i.e., 10s or 100s of meters). This is important as we think that some sectors, like high-growth high-tech startups, have microgeographic agglomerations.**Produce maps of agglomerations so we can examine their characteristics (socio-economics, demographics, physical, etc.) and facilities (e.g., parks, coffee shops, etc.) of agglomerations without including irrelevant areas. The results have policy implications.*Allow estimation of continuous changes in spatial characteristics on agglomeration economies.**Determine the equilibrium, where costs (from increased competition over scarce resources) and benefits (from reduced transportation costs) are in balance, and understand its policy implications. **Conduct policy simulations by demarking some area as an innovation district and exploring the effects of relocating startups into it. *In the context of venture-backed startups, agglomeration economies are as powerful as scale effects but easier and cheaper to achieve with policy.  The revision will be built around a public-policy hook?, which pervades these points.