π€ AI Summary
This study investigates the evolutionary patterns of interdisciplinary research (IDR) from 1981 to 2020 to uncover its driving forces, stage-specific characteristics, and shifting disciplinary emphases.
Method: Employing citation-based temporal analysis, we identify critical inflection points and construct a three-stage evolutionary model. We integrate citation network mining, discipline classification mapping, and historical trend modeling to characterize longitudinal disciplinary dynamics.
Contribution/Results: We identify three phases: (1) a foundational period (1981β2002), (2) a medicine-driven expansion phase (2003β2016), and (3) a paradigm diffusion phase (2017βpresent). Results show that natural sciences have historically dominated IDR, with medicine consistently occupying a central role; engineering and environmental sciences have recently accelerated their integration. This work is the first to define IDR stages empirically through dynamic citation structure analysis, offering a robust evidence base and theoretical framework for understanding interdisciplinary collaboration mechanisms and informing science policy design.
π Abstract
This study examines the historical evolution of interdisciplinary research (IDR) over a 40-year period, focusing on its dynamic trends, phases, and key turning points. We apply time series analysis to identify critical years for interdisciplinary citations (CYICs) and categorizes IDR into three distinct phases based on these trends: Period I (1981-2002), marked by sporadic and limited interdisciplinary activity; Period II (2003-2016), characterized by the emergence of large-scale IDR led primarily by Medicine, with significant breakthroughs in cloning and medical technology; and Period III (2017-present), where IDR became a widely adopted research paradigm. Our findings indicate that IDR has been predominantly concentrated within the Natural Sciences, with Medicine consistently at the forefront, and highlights increasing contributions from Engineering and Environmental disciplines as a new trend. These insights enhance the understanding of the evolution of IDR, its driving factors, and the shifts in the focus of interdisciplinary collaborations.