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Search engine coverage of the OAI-PMH corpus

McCown, F. ; Nelson, M.L. ; Zubair, M. ; Liu, X.

IEEE internet computing, 2006-03, Vol.10 (2), p.66-73 [Revista revisada por pares]

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Título:
Search engine coverage of the OAI-PMH corpus
Autor: McCown, F. ; Nelson, M.L. ; Zubair, M. ; Liu, X.
Materias: Applied sciences ; Archives ; Collection ; Computer science; control theory; systems ; Computer systems and distributed systems. User interface ; Crawlers ; Data models ; deep web ; Digital systems ; Exact sciences and technology ; indexing ; Information systems. Data bases ; Internet ; Investments ; Memory organisation. Data processing ; Metadata ; OAI PMH ; Protection ; Protocols ; Repositories ; Robots ; Search engines ; Searching ; Software ; Software libraries ; Uniform resource locators ; Writing
Es parte de: IEEE internet computing, 2006-03, Vol.10 (2), p.66-73
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descripción: Having indexed much of the "surface" Web, search engines are now using various approaches to index the "deep" Web. At the same time, institutional repositories and digital libraries are adopting the open archives initiative protocol for metadata harvesting (OAI-PMH) to expose their holdings. The authors harvested nearly 10 million records from OAI-PMH repositories. From these records, they extracted 3.3 million unique resource URLs and then conducted searches on samples from this collection to determine how much of the OAI-PMH corpus the three major search engines have indexed.
Editor: New York, NY: IEEE
Idioma: Inglés

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