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/20231228103838/https://www.researchgate.net/login?_sg=kffbkwaeNefvA9LYdqrR9E79EgAzLM-EMGddcZ9XrHnx4NM8z5y6HbJxilOxYk95uTSMipTX8_bo-tev6WmrRA