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/20231228104238/https://www.researchgate.net/login?_sg=v-rjlMwZJBpqjpyUKh9fJAmu89FKxp3j_AWaz0FZ3zyTc_WIKwgBcfKzefpzixbtTnxWfE3M3qOwYw