Evolution of Collaborative Networks in Gastrointestinal Endoscopy: Analyzing Key Collaborations and Network Characteristics (2000-2023)

Abstract Aim This study aims to analyze the evolution of collaborative networks in gastrointestinal endoscopy research from 2000 to 2023. The focus is on identifying key collaborations and evaluating the centrality of Japanese researchers within the global context. Method Data from 23,307 articles related to gastrointestinal endoscopy, published between 2000 and 2023, were extracted from the Web of Science (WoS) database. Network analysis was conducted using Python (version 3.10.5) in the PyCharm (software version 2022.1.3) development environment. The analysis employed macro-level metrics, including network density, clustering coefficient, components, and average distance, as well as micro-level metrics, such as degree centrality, closeness centrality, and betweenness centrality. Result The study revealed that the co-authorship network in gastrointestinal endoscopy research has evolved significantly over the past two decades. The network density slightly increased from 0.0003654681 in 2000–2009 to 0.00034 in 2020–2023, while the average clustering coefficient also rose, indicating stronger clustering among researchers. Key researchers, including Hassan, Cesare, and Dinis-Ribeiro, Mario, were identified as central figures in the network, maintaining high degree and closeness centrality throughout the study period. Japanese researchers, such as Fujishiro, Mitsuhiro, and Saito, Yutaka, also played a prominent role in connecting different subgroups within the network, particularly in the later years. Conclusion The analysis demonstrates the dynamic nature of collaborative networks in gastrointestinal endoscopy research, with Japanese researchers playing a pivotal role in global collaborations. The findings highlight the importance of these researchers in driving innovation and shaping the future of gastrointestinal endoscopy.