[GOAL] Dramatic Growth of Open Access: June 30, 2016

[Éric Archambault]

Heather,

In the absence of strong evidence, it is difficult to speak of a dramatic growth. The specific challenge of measuring OA availability is that in order to measure growth you need to measure at different points in time with the same measure or to be able to re-calibrate your measures for each different measures. This is due to the effects of journals which contents become free over time, embargoes, and backfilling. 

Here are measures of gratis OA availability as measured in 122 oncology and carcinogenesis journals by examining what is currently available in 1science oaIndx (which compiles gratis OA) coupled with data from Thomson Reuters Web of Science (WoS). Please note that this is a population based measure (all of the papers in WoS for these journals are measured) but we haven't done a calibration of oaIndx in this field so I cannot tell you what the recall and precision are. I would say precision is about 98 to 99% and recall between 70% to 80%, meaning these percentages could be multiplied by an approximate calibration factor of about 1.33. The results are presented here - I just computed them as I'm finishing a report on a German university's library's subscriptions and had these data available by extracting this small part from the report. The one before last column is the measured, floor quantity of gratis OA. This shows that as measured in June 2016, the effect of backfilling and desembargoing could be substantial but as we don't have a similar point of measure back in time this can only be surmised. What is clear is that in such an important area of research for human health, embargoes are still hurting free knowledge circulation and we are still too far from 100% gratis OA.

These data are CC BY - feel free to use - cite the List here if you want to use (sorry too busy to publish anything these days)

Gratis OA papers found and total papers in WoS in 122 published in journals classified in "Oncology & Carcinogenesis" (Science-Metrix Journal Classification)
				
Year // Papers in 1science oaIndx//Papers in WoS // Measured % Gratis OA // Approx. % with 1.33 calibration
2006	8,368	16,890	50%	66%
2007	8,915	17,775	50%	67%
2008	9,492	18,358	52%	69%
2009	9,394	18,684	50%	67%
2010	10,207	19,236	53%	71%
2011	9,910	19,694	50%	67%
2012	9,940	21,135	47%	63%
2013	12,046	23,597	51%	68%
2014	12,487	26,201	48%	64%
2015	7,975	24,003	33%	44%
Source: Computed by Science-Metrix in collaboration with 1science using 1science oaIndx and Thomson Reuters' Web of Science data.


Have a nice Canada day!


Eric Archambault, Ph.D.
President and CEO | Président-directeur général
Science-Metrix & 1science   





-----Original Message-----
From: goal-bounces at eprints.org [mailto:goal-bounces at eprints.org] On Behalf Of Heather Morrison
Sent: June 30, 2016 4:46 PM
To: Global Open Access List (Successor of AmSci) <goal at eprints.org>
Subject: [GOAL] Dramatic Growth of Open Access: June 30, 2016

The June 30, 2016 version of the Dramatic Growth of Open Access is now available:
http://poeticeconomics.blogspot.ca/2016/06/dramatic-growth-of-open-access-june-30.html

Highlights

Over 40% of the cancer literature indexed by PubMed is available as full-text within 3 years of publication (17% within 30 days) Internet Archive exceeds 10 million free texts Ongoing strong growth in open access archives, both repositories and content, as seen through OpenDOAR, ROAR, and BASE 50% annual growth rate for the Directory of Open Access Books Directory of Open Access Journals has overall negative growth due to major clean-up but showed strong growth in articles searchable at article level and now adding titles at the rate of 4.5 per day Concern noted about the apparent ongoing dramatic growth of Elsevier

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.Morrison at uottawa.ca



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