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Optimization of gravity model based on coopetition perspective and its application in synergetic development
Yang Liu1,2
1Kashi University School of Transportation, Kashi, 844000, PR China. DeVoeYangL@163.com.
Abstract:
This paper introduces an enhanced gravity model that incorporates a coopetition framework and a K-nearest neighbor (KNN) spatial weighting scheme to analyze the synergistic evolution of China's five major coastal port clusters. Given the ongoing restructuring of global supply chains and the increasing focus on regional port integration, this research addresses a subject of considerable contemporary relevance and practical significance. Drawing on panel data spanning 2015 to 2024, we develop an evaluation framework comprising eight key indicators and employ the entropy weight method to quantify their respective contributions. Empirical findings identify inland waterway mileage, berth capacity, and railway mileage as the most influential drivers of port cluster synergy. The analysis reveals a consistently strengthening synergistic linkage between the Bohai Rim Port Cluster and the Pearl River Delta Port Cluster, while the synergy between the Bohai Rim and Yangtze River Delta port clusters demonstrates a gradual weakening trend. This study offers a methodological advancement for assessing interactive dynamics among port groups and yields strategic insights to inform policies aimed at fostering coordinated port development.
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