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The Detection Model of Disaster Issues based on the Risk Degree of Social Media Contents

소셜미디어 위험도기반 재난이슈 탐지모델

  • Choi, Seon Hwa (Safety Research Division, National Disaster Management Research Institute)
  • 최선화 (국립재난안전연구원 안전연구실)
  • Received : 2016.11.03
  • Accepted : 2016.12.09
  • Published : 2016.12.31

Abstract

Social Media transformed the mass media based information traffic, and it has become a key resource for finding value in enterprises and public institutions. Particularly, in regards to disaster management, the necessity for public participation policy development through the use of social media is emphasized. National Disaster Management Research Institute developed the Social Big Board, which is a system that monitors social Big Data in real time for purposes of implementing social media disaster management. Social Big Board collects a daily average of 36 million tweets in Korean in real time and automatically filters disaster safety related tweets. The filtered tweets are then automatically categorized into 71 disaster safety types. This real time tweet monitoring system provides various information and insights based on the tweets, such as disaster issues, tweet frequency by region, original tweets, etc. The purpose of using this system is to take advantage of the potential benefits of social media in relations to disaster management. It is a first step towards disaster management that communicates with the people that allows us to hear the voice of the people concerning disaster issues and also understand their emotions at the same time. In this paper, Korean language text mining based Social Big Board will be briefly introduced, and disaster issue detection model, which is key algorithms, will be described. Disaster issues are divided into two categories: potential issues, which refers to abnormal signs prior to disaster events, and occurrence issues, which is a notification of disaster events. The detection models of these two categories are defined and the performance of the models are compared and evaluated.

Keywords

social media;disaster management;disaster issue detection;big data

Acknowledgement

Grant : 재난상황관리기술개발

Supported by : 국립재난안전연구원

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