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Analysis of eSports Industry Trends Using TF-IDF and LDA Topic Modeling

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2026, 31(9), pp.259~269
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : July 15, 2026
  • Accepted : August 24, 2026
  • Published : September 30, 2026

Tae-Min Lee 1,  Jeon-Young Kong 1,  Woong Kim 1

1동양대학교

Accredited

ABSTRACT

This study analyzed major discourses in the esports industry using TF-IDF and LDA topic modeling. The dataset comprised 40 KIPRIS patents, 289 KeSPA press releases, and 171 Global Esports news articles. Preprocessing included regular-expression-based token extraction, stop-word removal, orthographic normalization, and compound-term preservation. English candidate terms were mapped to representative Korean concepts, and source-specific mean TF-IDF scores were L1-normalized and combined with equal weights to identify key terms. For LDA, the 500 original documents were retained as individual units, with adjustments for document length and source imbalance. Topic models containing two to ten topics were evaluated using coherence, perplexity, diversity, and stability. The analysis identified three source-associated topics: technology and data services, domestic leagues and talent development, and global cooperation and governance. This study contributes by comparing esports-industry discourses across multiple sources while limiting its interpretation to the collected dataset.

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