Quantitative Analysis of Keyword and Topic Changes in the Basic Mining Plans using Natural Language Processing

Text data analysis of Basic Mining Plans can yield quantitative results that differ from those obtained through expert analysis methods.This study conducted a quantitative analysis of the changes in the following Basic Mining Plans: the 2nd Plan in 2014, the 3rd Plan in 2020, and the 4th Plan in 2024.The commonalities and differences among these plans were examined through word frequency and topic modeling analyses based on natural language processing techniques.The 2nd Basic Mining Plan emphasized planning and strategy development, while the 3rd Plan expanded to include safety, education, materials, and issues related to North Korea.The 4th Plan highlighted the topics of foreign employment and smart mining, along with the stockpiling keyword, which indicates an increase in instability within the global raw material supply chain.This study systematically traced the evolution of topics and keywords over time through topic modeling based on natural language processing.