Beyond Activity Space: Detecting Communities in Ecological Networks

Wenna Xi, Catherine A. Calder and Christopher R. Browning

Annals of the American Association of Geographers, 2020, vol. 110, issue 6, 1787-1806

Abstract: Emerging research suggests that the extent to which activity spaces—the collection of an individual’s routine activity locations—overlap provides important information about the functioning of a city and its neighborhoods. To study patterns of overlapping activity spaces, we draw on the notion of an ecological network, a type of two-mode network with the two modes being individuals and the geographic locations where individuals perform routine activities. We describe a method for detecting “ecological communities” within these networks based on shared activity locations among individuals. Specifically, we identify latent activity pattern profiles, which, for each community, summarize its members’ probability distribution of going to each location, and community assignment vectors, which, for each individual, summarize his or her probability distribution of belonging to each community. Using data from the Adolescent Health and Development in Context Study, we employ latent Dirichlet allocation to identify activity pattern profiles and communities. We then explore differences across neighborhoods in the strength and within-neighborhood consistency of community assignment. We hypothesize that these aspects of the neighborhood structure of ecological community membership capture meaningful dimensions of neighborhood functioning likely to covary with economic and racial composition. We discuss the implications of a focus on ecological communities for the conduct of “neighborhood effects” research more broadly.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
http://hdl.handle.net/10.1080/24694452.2020.1715779 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:taf:raagxx:v:110:y:2020:i:6:p:1787-1806

Ordering information: This journal article can be ordered from
http://www.tandfonline.com/pricing/journal/raag21

DOI: 10.1080/24694452.2020.1715779

Access Statistics for this article

Annals of the American Association of Geographers is currently edited by Jennifer Cassidento

More articles in Annals of the American Association of Geographers from Taylor & Francis Journals
Bibliographic data for series maintained by Chris Longhurst ().