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 - http://web-wp.archive.org/web/20231228113922/https://www.researchgate.net/login?_sg=w37ejcfD95BPQtlTo0YpoVeQ0LxjfBhzlB7j8PvaDVIhdUAMtO1wekiuzTk-1FLk7RAzHv5ET8ZsrA