EXPLORATORY ANALYSIS OF NATURAL DISASTER RISK ASSESSMENT INDICATORS USING TOPIC MODELS

Abstract

In order for individuals to voluntarily prepare for disasters and foster disaster prevention awareness in peacetime, it is important to have evaluation indicators that quantitatively indicate risk and appropriately evaluate natural disaster risks. Although quantification and indexing of natural disaster risks have been promoted in various countries, these efforts have been aimed at countries and states, not individuals. Therefore, in this study, we apply bibliometric methods and attempt an exploratory analysis focusing on individual vulnerability in natural disasters. By applying a topic model to papers on natural disasters, we identified five elements that are not included in conventional vulnerability indicators, and after comparing them from the three perspectives of temporality, measurability, and returnability to individuals, we concluded that four of them are additional elements for considering individual vulnerability.