These are good questions from Bo-Christer Björk and we are now doing further breakdowns of the robot analyses to estimate the proportions of publisher-provided delayed access vs author self-archiving.<div><br></div><div>Stevan Harnad<br>
<br><div class="gmail_quote">On Wed, Nov 7, 2012 at 12:44 PM, Bo-Christer Björk <span dir="ltr"><<a href="mailto:bo-christer.bjork@hanken.fi" target="_blank">bo-christer.bjork@hanken.fi</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Dear Sally,<br>
<br>
This has obviously puzzled us as well as Yassine and Stevan.<br>
<br>
The discrepancies in the green figures are easier to deal with.
Since Yassine's gold figures are so low and everything else which
the robots have found is classified as "self-archieved" the hits
classified as green rise over 20 %. However, in our studies we
have further split down such copies into further categories. It
turns out that part are not self-archived at all but articles in
delayed OA journals (the robot searches are made with a
considerable delay due to the availability of meta-data), paid
hybrid articles and promotionally free articles in subscription
journals (many journals seem to make one issue per annum free as
advertisement). All of these are caught in the same robotized net
and should be sorted out. In 2011 there were around 83'000 delayed
OA articles, around 10'000 hybrid article and an unknown number of
promotional OA articles in ISI journals which together make at
least 7-8 %.<br>
<br>
The huge discrepancy in the pure gold number is more difficult to
explain, and the fact that Yassine's study had a more limited
number of disciplines with equally big samples cannot alone
explain it. Their numbers show hardly any growth in the gold share
in ISI between 2005 and 2010, when our as we believe very robust
method shows a very substantial growth (from 6,6 % to 9 % share in
ISI between just 2008 and 2011). Also their numbers are even lower
than the McVeigh study from 2003, a year when BMC and PLoS were
just started.<br>
<br>
Best regards<br>
<br>
Bo-Christer<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
On 11/6/12 6:41 PM, Sally Morris wrote:<br>
</div>
<blockquote type="cite">
<div><span>Can anyone shed light on the
following apparent discrepancy:</span></div>
<div><span></span> </div>
<div><span>Laakso and Bjork (<a href="http://www.biomedcentral.com/1741-7015/10/124" target="_blank">http://www.biomedcentral.com/1741-7015/10/124</a>)
give a figure for articles published in 2011 and indexed in
Scopus - 11% in full Gold journals, 0.7% in hybrid journals,
and 5% in 'delayed OA' journals with a delay of no more than
12 months [Stevan may not like the term, but I think the rest
of us understand it well enough, so let's not get into that!]</span></div>
<div><span></span> </div>
<div><span>Gargouri et al (<a href="http://arxiv.org/ftp/arxiv/papers/1206/1206.3664.pdf" target="_blank">http://arxiv.org/ftp/arxiv/papers/1206/1206.3664.pdf</a>),
on the other hand, give a figure of just 1.2% articles
published in 2010 via Gold OA</span></div>
<div><span></span> </div>
<div><span>Furthermore, Gargouri et al
give the percentage of 2010 articles available via Green OA as
21.9% (2008 articles 20.6%). Bjork et al (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0011273" target="_blank">http://www.plosone.org/article/info:doi/10.1371/journal.pone.0011273</a>)
had a very different figure of 11.9% for articles published in
2008.</span></div>
<div><span></span> </div>
<div><span>I can't get my head round
the spectacular difference between the two sets of figures -
can someone please explain? I can't believe that
inclusion/exclusion in Scopus can possibly account for it. Am
I missing something?</span></div>
<div><span></span> </div>
<div><span>Thanks</span></div>
<div><span></span> </div>
<div><span>Sally</span></div>
<div><span></span> </div>
<div> </div>
<div>Sally Morris</div>
<div>South House, The Street, Clapham, Worthing, West Sussex, UK
BN13 3UU</div>
<div>Tel: <a href="tel:%2B44%20%280%291903%20871286" value="+441903871286" target="_blank">+44 (0)1903 871286</a></div>
<div>Email: <a href="mailto:sally@morris-assocs.demon.co.uk" target="_blank">sally@morris-assocs.demon.co.uk</a></div>
<div> </div>
</blockquote>
<br>
</div>
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