Web Crawling

Autor: Marc Najork, Christopher Olston
Rok vydání: 2010
Předmět:
Zdroj: Foundations and Trends® in Information Retrieval. 4:175-246
ISSN: 1554-0677
1554-0669
DOI: 10.1561/1500000017
Popis: This is a survey of the science and practice of web crawling. While at first glance web crawling may appear to be merely an application of breadth-first-search, the truth is that there are many challenges ranging from systems concerns such as managing very large data structures to theoretical questions such as how often to revisit evolving content sources. This survey outlines the fundamental challenges and describes the state-of-the-art models and solutions. It also highlights avenues for future work.
Databáze: OpenAIRE