The evolution of a crawling strategy for an academic document search engine: Whitelists and blacklists

Jian Wu, Pradeep Teregowda, Juan Pablo Fernández Ramírez, Prasenjit Mitra, Shuyi Zheng, C. Lee Giles

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

We present a preliminary study of the evolution of a crawling strategy for an academic document search engine, in particular CiteSeerX. CiteSeerX actively crawls the web for academic and research documents primarily in computer and information sciences, and then performs unique information extraction and indexing extracting information such as OAI metadata, citations, tables and others. As such CiteSeerX could be considered a specialty or vertical search engine. To improve precision in resources expended, we replace a blacklist with a whitelist and compare the crawling efficiencies before and after this change. A blacklist means the crawl is forbidden from a certain list of URLs such as publisher domains but is otherwise unlimited. A whitelist means only certain domains are considered and others are not crawled. The whitelist is generated based on domain ranking scores of approximately five million parent URLs harvested by the CiteSeerX crawler in the past four years. We calculate the F1 scores for each domain by applying equal weights to document numbers and citation rates. The whitelist is then generated by re-ordering parent URLs based on their domain ranking scores. We found that crawling the whitelist significantly increases the crawl precision by reducing a large amount of irrelevant requests and downloads.

Original languageEnglish
Title of host publicationProceedings of the 4th Annual ACM Web Science Conference, WebSci'12
PublisherAssociation for Computing Machinery
Pages340-343
Number of pages4
ISBN (Print)9781450312288
DOIs
Publication statusPublished - 1 Jan 2012
Event4th Annual ACM Web Science Conference, WebSci 2012 - Evanston, IL, United States
Duration: 22 Jun 201224 Jun 2012

Publication series

NameProceedings of the 4th Annual ACM Web Science Conference, WebSci'12
Volumevolume

Conference

Conference4th Annual ACM Web Science Conference, WebSci 2012
CountryUnited States
CityEvanston, IL
Period22/6/1224/6/12

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Keywords

  • Information retrieval
  • Search engine
  • Web crawling

ASJC Scopus subject areas

  • Computer Networks and Communications

Cite this

Wu, J., Teregowda, P., Ramírez, J. P. F., Mitra, P., Zheng, S., & Giles, C. L. (2012). The evolution of a crawling strategy for an academic document search engine: Whitelists and blacklists. In Proceedings of the 4th Annual ACM Web Science Conference, WebSci'12 (pp. 340-343). (Proceedings of the 4th Annual ACM Web Science Conference, WebSci'12; Vol. volume). Association for Computing Machinery. https://doi.org/10.1145/2380718.2380762