The amenity mix of urban neighborhoods

• https://scholar.google.co.kr/scholar?cluster=9347554434696610476
• Cesar Hidalgo, Elise Castañer, Andres Sevtsuk

This paper used Google Places API to collect information about 1.26m amenities across 47 US cities.

… to model the amenity mix of neighborhoods, and to identify the amenities that are over- or under-supplied in a neighborhood.

The effective number of amenities of location $i$ is defined as

$$A_i = \sum_{j=1}^{N}e^{-\gamma d_{ij}}$$

Pedestrian trips rarely exceed a 10-minute walk: Handy1997accessbility and Sevtsuk2014location.