Intellectual structure evolution of open access research observed through correlation index of keyword centrality
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Intellectual structure evolution of open access research observed through correlation index of keyword centrality Jane Cho1 Received: 19 May 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract This study captured intellectual structures of open access by time frame using the pathfinder keyword network analysis method. 1998 papers published on Web of Science from 2005 to 2019 were divided into 3-year units, and keyword pathfinder networks were analyzed in five time segments. Thus, this study examined the time series changes of intellectual structure and keyword centrality. In addition, by analyzing the correlation index of keyword centrality between time segments, this study examined how long the similarities of the intellectual structure persisted and how it has changed. As a result, a weak correlation (r = 0.10 ~ r = 0.49) was obtained from the observations in 2005 for 9 years; however, the correlation decreased sharply since 2014 (r = − 0.06 ~ r = 0.00). New research topics have emerged that have not been highlighted in centrality, such as article processing charge, altmetrics, and research data. The scope of research has changed as subjects such as document delivery that showed high centrality initially, disappeared. Keywords Intellectual structure · Open access · Pathfinder network analysis · Web of science · Time series changes
Introduction Since the declaration of the Budapest Open Access Initiative in February 2002, various open access (OA) policies have been implemented in each country. In the United States, United Kingdom, Australia, etc., the obligations that allow public access to public funded research have been actively implemented. In the journal publishing market, many publishers are actively supporting the green OA policy by allowing self-archiving by authors for pre- or post-print. In addition, there is an increasing number of hybrid journals based on the Article Processing Charge (APC) policy of major research support agencies in Europe. As a result, according to the data released by the Open Access Scholarly Publishers Association (OASPA) in July 2019, the number of OA articles published under the CC-BY license in 2018 was 261,621, up 23% from the previous year. As the number of OA papers * Jane Cho [email protected]; [email protected] 1
Department of Library and Information Science, Incheon National University, 119 Academy‑ro, Songdo 1(il)‑dong, Yeonsu‑gu, Incheon, Republic of Korea
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Scientometrics
increased, libraries in each country began to insist on a reasonable journal subscription price; in addition, the model of a transformative agreement, which replaces the subscription cost with the editing service required for publishing open access content, is being promoted. Furthermore, with the announcement of PlanS (www.coalition-s.org) to realize complete and immediate open access to publicly funded research results, the open access movement is taking a new step. As the movement progresses, the number of researches related to this topic is increasing, and
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