ABEMA is an online television service in Japan. It has approximately 20 channels that specialize in specific genres, such as news, sports, anime, and drama. Each channel broadcast programs with certain time schedules. The ABEMA news channels provide programs created by a Japanese TV broadcaster “TV Asahi”; thus, their topics and qualities are comparable to traditional television news. 6.38 million active ABEMA users per week, as recorded after the dataset used in this study were collected (Sep. 2018) [72].
Audiences of ABEMA can post 50-character comments while watching a program, and other users can read them immediately (Fig 1b). Users can hide the comment field; therefore, not all users read them. Most programs use the Japanese language and most comments are written in Japanese.
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