International Journal of Knowledge Content Development & Technology

Research Institute for Knowledge Content Development & Technology (건국대학교 지식콘텐츠연구소)
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Online Discourse and Network Structures of Yuseong-gu Public Libraries: Big-Data Text Mining and Topic Modeling for Evidence-Based Policy Design

  • Jihei Kang (Department of Library and Information Science, Dongduk University) ;
  • Inho Chang (Department of Library and Information Science, Daejin University) ;
  • Younghee Noh (Department of Library and Information Science, Konkuk University ) ;
  • Ji-Yoon Ro (Department of Library and Information Science, Gwangju University) ;
  • Youngji Shin (Department of Library and Information Science, Dong-Eui University)
  • Received : 2026.02.20
  • Accepted : 2026.03.05
  • Published : 2026.06.30
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Abstract

This study investigates how digital discourse surrounding Yuseong-gu public libraries is structured and how it informs evidence-based policy architecture. Online text data were collected from major Korean portals (Naver and Daum) between July 2022 and June 2025 using "Yuseong-gu public libraries" as the core search query. The corpus was analyzed using text mining, keyword network analysis, and latent Dirichlet allocation (LDA) topic modeling. Word frequency and TF-IDF results indicate that place-anchored identifiers (e.g., Yuseong-gu, Daejeon) and culture-related vocabulary constitute the discourse backbone, while managerial and operational terms such as integration, support, and homepage signal demand for coordinated governance and enhanced digital accessibility. N-gram analysis further emphasizes the demand for an integrated information and participation portal, most clearly reflected in the recurrent sequence "Yuseong-gu-integrated-library-homepage." Network analysis reveals a high-density structure with a short average path length, confirming strong thematic interconnectedness; the node "library" functions as the primary hub and is directly linked to "culture," indicating the library's discursive positioning as a cultural platform. The findings support strategic policy directions, including a hub-satellite spatial system embedded across neighborhood life zones, cross-sectional programming integrating education, culture, and community participation, a mobile-first integrated digital portal, and institutionalized partnerships with schools and local cultural institutions.

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