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Subject: Google Scholar
From: Jan Szczepanski <[log in to unmask]>
Reply-To:BIBLIST - Topics in Nordic research library user services <[log in to unmask]>
Date:Tue, 3 Mar 2009 08:34:42 +0100
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I senaste numret av Portal finns en intressant undersökning av William 
H. Walter: Performance:
comparative recall and precision:

abstract: This paper presents a comparative evaluation of Google Scholar 
and 11 other bibliographic
databases (Academic Search Elite, AgeLine, ArticleFirst, EconLit, 
GEOBASE, MEDLINE, PAIS
International, POPLINE, Social Sciences Abstracts, Social Sciences 
Citation Index, and SocINDEX),
focusing on search performance within the multidisciplinary field of 
later-life migration. The
results of simple keyword searches are evaluated with reference to a set 
of 155 relevant articles
identified in advance. In terms of both recall and precision, Google 
Scholar performs better than
most of the subscription databases. This finding, based on a rigorous 
evaluation procedure, is
contrary to the impressions of many early reviewers. The paper concludes 
with a discussion of a
new approach to document relevance in educational settings—an approach 
that accounts for the
instructors’ goals as well as the students’ assessments of relevance.

Slutsats:

These findings suggest thata searcher who is unwilling to search 
multiple databases or o adopt a
sophisticated search strategy is likely to achieve better than average 
recall and precision by using
Google Scholar.

http://muse.jhu.edu/journals/portal_libraries_and_the_academy/toc/pla.9.1.html

Jan


-- 
De åsikter som framförs här är mina personliga 
och inte ett uttryck för Göteborgs universitets-
biblioteks hållning


Opinions expressed here are my own and not
those of the Gothenburg University Library 



Jan Szczepanski
Förste bibliotekarie 
Goteborgs universitetsbibliotek 
Box 222
SE 405 30 Goteborg, SWEDEN 
Tel: +46 31 7861164 Fax: +46 31 163797 
E-mail: [log in to unmask]









  

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