Spiders (Robots/Bots/Crawlers) ... A simple spider architecture -- crawler process and downloading threads ... multiple co-ordinated crawlers with about 300 ...
extract urls. initial urls. to visit urls. visited urls. web pages. 3 ... extract urls. 6. Crawling Issues (3) Scope of crawl. not enough space for 'all' pages ...
Taking the Web as a graph structure (V,E), web crawling is similar to graph ... InfoSpiders, also known as ARACHNID (Adaptive Retrieval Agents Choosing ...