Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
The Wayback Machine - https://web.archive.org/web/20161003235053/http://somalia.unfpa.org/sites/arabstates/files/pub-pdf/Population-Estimation-Survey-of-Somalia-PESS-2013-2014.pdf