[Oa-italia] OAIster raggiunge 10 Million di record
Paola.Gargiulo a caspur.it
Gio 25 Gen 2007 21:50:45 CET
OAIster raggiunge i 10 milioni di record indicizzati
ANN ARBOR, Mich. - OAIster Reaches 10 Million Records.
We live in an information-driven world-- one in which access to good
information defines success. OAIster's growth to 10 million records takes
us one step closer to that goal.
Developed at the University of Michigan's Library, OAIster is a collection
of digital scholarly resources. OAIster is also a service that continually
gathers these digital resources to remain complete and fresh. As global
digital repositories grow, so do OAIster's holdings.
Popular search engines don't have the holdings OAIster does. They crawl web
pages and index the words on those pages. It's an outstanding technique for
fast, broad information from public websites. But scholarly information,
the kind researchers use to enrich their work, is generally hidden from
these search engines.
OAIster retrieves these otherwise elusive resources by tapping directly into
the collections of a variety of institutions using harvesting technology
based on the Open Archives Initiative (OAI) Protocol for Metadata
Harvesting. These can be images, academic papers, movies and audio files,
technical reports, books, as well as preprints (unpublished works that have
not yet been peer reviewed). By aggregating these resources, OAIster makes
it possible to search across all of them and return the results of a
thorough investigation of complete, up-to-date resources.
Ann Devenish, Publication Services Project Manager at Woods Hole
Oceanographic Institute, notes that "Harvesting by OAIster is a primary
'selling point' when we talk to scientists and researchers about the
visibility, accessibility, and impact of their contributions in an
institutional repository. From their own experiences they know that a
search using one of the popular search engines can bring back thousands (if
not, millions) of results which will require careful and time-consuming
screening, with no guarantee that they will ever get to the content they
seek. A search of OAIster, across hundreds of open and scholarly archives
and millions of records, brings back results with the key metadata elements
that allow for quick identification of, and easy navigation to, the content
OAIster is good news for the digital archives that contribute material to
open-access repositories. "[OAIster has demonstrated that]...OAI
interoperability can scale. This is good news for the technology, since the
proliferation is bound to continue and even accelerate," says Peter Suber,
author of the SPARC Open Access Newsletter. As open-access repositories
proliferate, they will be supported by a single, well-managed,
comprehensive, and useful tool.
Scholars will find that searching in OAIster can provide better results than
searching in web search engines. Roy Tennant, User Services Architect at
the California Digital Library, offers an example: "In OAIster I searched
'roma' and 'world war,' then sorted by weighted relevance. The first hit
nailed my topic-- the persecution of the Roma in World War II. Trying 'roma
world war' in Google fails miserably because Google apparently searches
'Rome' as well as 'Roma.' The ranking then makes anything about the Roma
people drop significantly, and there is nothing in the first few screens of
results that includes the word in the title, unlike the OAIster hit."
OAIster currently harvests 730 repositories from 49 countries on 6
continents. In three years, it has more than quadrupled in size and
increased from 6.2 million to 10 million in the past year. OAIster is a
project of the University of Michigan Digital Library Production Service.
For more information about University of Michigan's OAIster Project, visit
http://www.oaister.org/, or contact Kat Hagedorn at khage a umich.edu.
OAIster/Metadata Harvesting Librarian
DLXS Bibliographic Class Coordinator
Digital Library Production Service
University of Michigan
email: khage a umich.edu
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