Defense Issue Analysis Using BERT and LDA Topic Modeling: Focused on Defense Innovation 4.0

Defense Innovation 4.0 is the current government's defense reform plan. In this paper, we focused on how much impact Defence Innovation 4.0 had on news reporting. To achieve this, we first collected defense-related articles for one year before and after the announcement of the national agenda. Then we extract set of keywords of the article using the Key BERT model. Based on these keywords, we analyze how major defense issues changed using Latent Dirichlet Allocation (LDA) topic modeling. In addition to analyzing how major defense issues changed using LDA topic modeling and conducting a SentenceBERT-based similarity comparison with the core content of the Defense Innovation 4.0 master plan. Through our research, we seek to gain valuable insights into how Defense Innovation 4.0 has influenced the discourse around defense-related topics within the media landscape.