BERTopicモデルを利用した震災復興研究

— 宮城県議会議員は何を発言してきたのか —

抄録

The present study utilizes the BERTopic model to analyze the speeches in general question sessions of Miyagi Prefectural Assembly members from 2011 to 2020. Findings reveal a focused discourse on ``disaster recovery'' during the reconstruction period, highlighting the interconnected nature of topics and forming a network around this central theme. The study uncovers regional differences in topic diversity based on disaster impact and shows the persistence of ``disaster recovery'' topics in the Miyagi Prefectural Assembly over a decade, despite their reduced presence in election manifestos. While offering insights, the study acknowledges limitations due to reliance on large datasets and the need for qualitative approaches to understand the socio-political nuances behind assembly members' speeches.