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<p>This study identifies key industries within Korea's regional economies and evaluates their economic impacts from both demand-side and supply-side perspectives. Employing a network-based approach, the study uses PageRank centrality analysis to identify key industries by analyzing their economic connectivity within regional industrial networks. To measure the economic impacts of these identified key industries, the Partial Hypothetical Extraction Method is applied, assessing their contributions to production output and employment. The analysis covers Korea’s regional economies using Multi-Regional Input–Output tables for the years 2005, 2010, and 2015, providing an evaluation of regional economic structures and trends over time. Results indicate regional disparities: demand-side centrality focuses the prominent role of manufacturing industries and major cities, such as Seoul and Gyeonggi, whereas supply-side centrality emphasizes internal economic stability and industrial linkages within regions. The study insists on the need for differentiated regional policy approaches that consider both external connectivity and internal stability, offering insights for policymakers seeking balanced regional economic development.</p>

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Identifying key industries and assessing their economic impacts in Korea’s regional economies: a network centrality and input–output approach from 2005 to 2015

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月1日

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  • Seongha Lee,
  • Taku Ishiro

摘要

This study identifies key industries within Korea's regional economies and evaluates their economic impacts from both demand-side and supply-side perspectives. Employing a network-based approach, the study uses PageRank centrality analysis to identify key industries by analyzing their economic connectivity within regional industrial networks. To measure the economic impacts of these identified key industries, the Partial Hypothetical Extraction Method is applied, assessing their contributions to production output and employment. The analysis covers Korea’s regional economies using Multi-Regional Input–Output tables for the years 2005, 2010, and 2015, providing an evaluation of regional economic structures and trends over time. Results indicate regional disparities: demand-side centrality focuses the prominent role of manufacturing industries and major cities, such as Seoul and Gyeonggi, whereas supply-side centrality emphasizes internal economic stability and industrial linkages within regions. The study insists on the need for differentiated regional policy approaches that consider both external connectivity and internal stability, offering insights for policymakers seeking balanced regional economic development.