동적 토픽 모델링과 감성 분석을 활용한전동킥보드에 대한 사회적 동향 분석

An electric scooter(e-scooter), one popularized micro-mobility vehicle has shown rapidly increasing use in many cities. In South Korea,the use of e-scooters has greatly increased, as some companies have launched e-scooter sharing services in a few large cities, startingwith Seoul in 2018. However, the use of e-scooters is still controversial because of issues such as parking and safety. Since the perceptiontoward the means of transportation affects the mode choice, it is necessary to track the trends for electric scooters to make the useof e-scooters more active. Hence, this study aimed to analyze the trends related to e-scooters. For this purpose, we analyzed news articlesrelated to e-scooters published from 2014 to 2020 using dynamic topic modeling to extract issues and sentiment analysis to investigatehow the degree of positive and negative opinions in news articles had changed. As a result of topic modeling, it was possible to extractthree different topics related to micro-mobility technologies, shared e-scooter services, and regulations for micro-mobility, and theproportion of the topic for regulations for micro-mobility increased as shared e-scooter services increased in recent years. In addition,the top positive words included quick, enjoyable, and easy, whereas the top negative words included threat, complaint, and ilegal, whichimplies that people satisfied with the convenience of e-scooter or e-scooter sharing services, but safety and parking issues should beaddressed for micro-mobility services to become more active. In conclusion, this study was able to understand how issues and socialtrends related to e-scooters have changed, and to determine the issues that need to be addressed. Moreover, it is expected that theresearch framework using dynamic topic modeling and sentiment analysis will be helpful in determining social trends on various areas.