Intelligent crawling on the World Wide Web with arbitrary predicates. - Charu C. Aggarwal; Fatima Al-Garawi; Philip S. Yu (WWW, 2001)

On the design of a learning crawler for topical resource discovery. - Charu C. Aggarwal; Fatima Al-Garawi; Philip S. Yu (ACM Trans. Inf. Syst., 2001)