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论文类型：期刊论文

发表时间：2021-03-05

发表刊物：COMPUTERS & ELECTRICAL ENGINEERING

卷号：85

ISSN号：0045-7906

关键字：Co-authorship network; Leadership; Sub-networks; Degree centrality; H-index

摘要：Recently most of the scientific studies have involved in a collaboration, team-based, and co-authorship approaches, which lead to knowledge production and high impact research outcomes. Previous studies lack to identify their real influential and productive nodes. We argue that investigating the structure of scientific teams with their leaders is equally essential as of the community structure. We formally define a scientific team leader as the most central member of a team. The proposed algorithm CLeader starts by initializing candidate leaders of a given co-authorship network. Consequently, we design a mathematical model to identify active and productive authors as real leaders, considering the publication year of their articles in a given period. Then, we iteratively discover subnetworks by grouping authors to their closest leaders and identify key members using DHRank. The experimental results indicate that the proposed algorithms outperform existing algorithms, and they are applicable in large-scale networks. (c) 2020 Elsevier Ltd. All rights reserved.