I agree that like-for-like comparisons are needed.
BASE says that around 60% of the documents it indexes are full-text. See here: https://www.base-search.net/about/en/ Some of its records also appear to be a little lightweight. Consider, for instance, the first item listed here: https://www.base-search. net/Search/Results?lookfor=poynder+timothy&type=all&oaboost= 1&ling=1&name=&thes=&refid=dcresen&newsearch=1 This essentially seems to be a link to a link. I understand that 1Science (of which I think Eric is CEO) says it currently offers 18.5 million OA articles, but its OAfindr does not appear to be an OA service itself. Presumably users have to pay to access the service? That seems to be an important factor when making comparisons. If there is an access charge for OAfindr, how much is that charge? It is also worth noting that ScienceOpen, which says it allow users to search over 25 million articles, actually only provides OA to 10% of those articles. See: https://twitter.com/RickyPo/status/783575794471886848. Has anyone done a review/comparison of all these services in order to allow us to get a better sense of like-for-like? Richard Poynder On 7 October 2016 at 11:55, Éric Archambault < eric.archamba...@science-metrix.com> wrote: > Just a quick note. > > The fact that BASE has more than 100 million "documents" is not such a > meaningful information as they do not define "documents". My impression is > that they are truly speaking about metadata records, not full-text > documents as a large number of these records do not contain documents - so > document is a misnomer. Scopus and WoS both have more than half a billion > references compiled. This is also several order of magnitude greater than > ScienceDirect but what is the value of that information as we are not > comparing likes. ScienceDirect comprises full-text articles. How many are > from peer-reviewed journals; are many such articles (deduplicated) are in > BASE. This is the relevant statistics. Of course, extending this to > monographs and conference proceedings full-text papers is also relevant, > but we need to compare likes for likes. > > > > > Eric Archambault, Ph.D. > President and CEO | Président-directeur général > Science-Metrix & 1science > > T. 1.514.495.6505 x.111 > C. 1.514.518.0823 > F. 1.514.495.6523 > > > Come visit us at the Frankfurt Book Fair at booth L85 in Hall 4.2 on > October 19-23! > Venez nous rencontrer à la Foire du livre de Francfort du 19 au 23 > octobre, kiosque L85 du Hall 4.2. > > > > > -----Original Message----- > From: goal-boun...@eprints.org [mailto:goal-boun...@eprints.org] On > Behalf Of Heather Morrison > Sent: October-06-16 9:56 PM > To: Global Open Access List (Successor of AmSci) > Subject: [GOAL] Dramatic Growth of Open Access September 30, 2016 > > The third quarter Dramatic Growth of Open Access is now available. There > will be plenty to celebrate for this year’s open access week! > > Highlights: > > Globally OA repository contents have exceeded a milestone of over 100 > million documents as indirectly measured by a BASE meta-search. This > dispersed collection is now an order of magnitude larger than Science > Direct! > > Despite a vigorous weeding and new get-tough inclusion policy, DOAJ > articles searchable at article level grew by about a quarter million this > past year, and DOAJ is now adding titles at the rate of 1.5 per day. > OpenDOAR added new repositories at almost exactly the same rate as DOAJ > added journal titles. > > Internet Archive now has over 3 million audio recordings. There are over > 2,000 more OA books and 161 more publishers in DOAB than there were a year > ago. > > PubMedCentral continues to show strong growth in every measure: more > journals actively participating, more providing immediate free access, all > articles open access, some articles open access. > > Details and links: http://poeticeconomics.blogspot.ca/2016/10/dramatic- > growth-of-open-access.html > > To download the data: https://dataverse.scholarsportal.info/dataverse/dgoa > > best, > > -- > Dr. Heather Morrison > Assistant Professor > École des sciences de l'information / School of Information Studies > University of Ottawa > http://www.sis.uottawa.ca/faculty/hmorrison.html > Sustaining the Knowledge Commons http://sustainingknowledgecommons.org/ > heather.morri...@uottawa.ca > > > > _______________________________________________ > GOAL mailing list > GOAL@eprints.org > http://mailman.ecs.soton.ac.uk/mailman/listinfo/goal > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.7797 / Virus Database: 4656/13121 - Release Date: 09/30/16 > > _______________________________________________ > GOAL mailing list > GOAL@eprints.org > http://mailman.ecs.soton.ac.uk/mailman/listinfo/goal > -- Richard Poynder www.richardpoynder.co.uk
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