4 Discussion
Tanaka, Shineha, and Maruyama also showed that there are gaps of interests
between newspapers and social media [2]. From their study, web news showed a
rapid decrease in topics on the 3.11 disasters, but there were simultaneous increases
in topics regarding “entertainment,” “sports,” “economics,” and so on. Although
this shift of interest is common for media, the difference of degree between media is
illustrated. This result can be interpreted as newspapers continuing to take up 3.11
issues more actively than Web news and underpin public interests on the 3.11
disasters. However, we should not dismiss that topics of 3.11 in newspapers have
Fig. 4 Co-word map of Kahoku-Shimpo (top week 1, bottom week 4)
122
R. Shineha and M. Tanaka
Tanaka, Shineha, and Maruyama also showed that there are gaps of interests
between newspapers and social media [2]. From their study, web news showed a
rapid decrease in topics on the 3.11 disasters, but there were simultaneous increases
in topics regarding “entertainment,” “sports,” “economics,” and so on. Although
this shift of interest is common for media, the difference of degree between media is
illustrated. This result can be interpreted as newspapers continuing to take up 3.11
issues more actively than Web news and underpin public interests on the 3.11
disasters. However, we should not dismiss that topics of 3.11 in newspapers have
Fig. 4 Co-word map of Kahoku-Shimpo (top week 1, bottom week 4)
122
R. Shineha and M. Tanaka