Social Media Communication Data for Recovery by Yuya Shibuya

Author:Yuya Shibuya
Language: eng
Format: epub
ISBN: 9789811508257
Publisher: Springer Singapore

6.1.2 Frequently Used Words After the Great East Japan Earthquake and Tsunami

For further analysis, this study extracts frequently used words after the disaster. To identify frequently used words, the author tested word appearance proportions between 2010 (before the disaster) and 2011 (after the disaster) based on the chi-square test. In doing so, the additional Facebook Pages between March 11th and September 11th in 2010 were collected (Table 6.1). This study first selected words with an appearance ratio that was high compared to the previous year of the disaster, assuming that if the appearance ratio of a word rose, there was a high possibility that the word was related to the disaster. When the author checked those words that often appeared manually, the author found that there were several non-disaster-related words among them. Therefore, with the purpose of this study in mind, the study manually picked 623 words based on whether a word related to the Great East Japan Earthquake and Tsunami, or to automobile demand. In the next subsection, the study examines types of communication that existed after the disaster based on these 623 words.Table 6.1Numbers of crawled data from Facebook Pages for the analysis

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