Figure 1.
Time series of daily steps for an example user. Dashed vertical lines correspond to edge creations. We observe significant increases in activity after each created edge (arrows).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.