Identifying collaboration dynamics of bipartite author-topic networks with the influences of interest changes

Diana Purwitasari (), Chastine Fatichah (), Surya Sumpeno (), Christian Steglich () and Mauridhi Hery Purnomo ()
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Diana Purwitasari: Institut Teknologi Sepuluh Nopember
Chastine Fatichah: Institut Teknologi Sepuluh Nopember
Surya Sumpeno: Institut Teknologi Sepuluh Nopember
Christian Steglich: University of Groningen
Mauridhi Hery Purnomo: Institut Teknologi Sepuluh Nopember

Scientometrics, 2020, vol. 122, issue 3, No 6, 1407-1443

Abstract: Abstract Knowing driving factors and understanding researcher behaviors from the dynamics of collaborations over time offer some insights, i.e. help funding agencies in designing research grant policies. We present longitudinal network analysis on the observed collaborations through co-authorship over 15 years. Since co-authors possibly influence researchers to have interest changes, by focusing on researchers who could become the influencer, we propose a stochastic actor-oriented model of bipartite (two-mode) author-topic networks from article metadata. Information of scientific fields or topics of article contents, which could represent the interests of researchers, are often unavailable in the metadata. Topic absence issue differentiates this work with other studies on collaboration dynamics from article metadata of title-abstract and author properties. Therefore, our works also include procedures to extract and map clustered keywords as topic substitution of research interests. Then, the next step is to generate panel-waves of co-author networks and bipartite author-topic networks for the longitudinal analysis. The proposed model is used to find the driving factors of co-authoring collaboration with the focus on researcher behaviors in interest changes. This paper investigates the dynamics in an academic social network setting using selected metadata of publicly-available crawled articles in interrelated domains of “natural language processing” and “information extraction”. Based on the evidence of network evolution, researchers have a conformed tendency to co-author behaviors in publishing articles and exploring topics. Our results indicate the processes of selection and influence in forming co-author ties contribute some levels of social pressure to researchers. Our findings also discussed on how the co-author pressure accelerates the changes of interests and behaviors of the researchers.

Keywords: Longitudinal network analysis; Scientific collaboration dynamics; Research interest changes; One mode co-author network; Bipartite (two-mode) author-topic network; Stochastic actor-oriented model; 68T30; 68U15; 90B15; 91B16; 91C20; 91D30 (search for similar items in EconPapers)
JEL-codes: C31 C38 C44 D80 D85 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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DOI: 10.1007/s11192-019-03342-2

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