Study on development of frequent phrase ranking display system by using Twitter for disaster detection

Japan, our country, is a disaster-prone area and many people have been killed by earthquakes or powerful storms and large-scale water flood. For example, many casualties caused on March 11, 2013 by the 2013 off the Pacific coast of Tohoku Earthquake because of the tsunami attack. In recent years, microblog service called Twitter been spreads explosively and the opportunity for people to disseminate information freely on Web is increasing. Twitter was used as one of the communication tools because lifeline system such as telephone stopped at the Tohoku Earthquake. Therefore, the author analyzed the utilization situation on Twitter as a useful communication tool during disasters and developed real-time display system by using frequent phrase ranking. Furthermore, the author tried to examine the possibility of disaster detection based on Twitter.

Disaster detection

Twitter

Microblog

Disaster prevention