Study on Temporal Change of Social Context: In the Case of Bicycle Riding Issue in Japan

摘要

For decision making in a community, a set of alternatives needs to be identified. The set of alternatives should be consistent with recognition in a community (Social context). In this study, we define "social context" as typical wording in community. Such wording appears in newspaper articles. We focus on the issue of bicycle riding in Japan and clarify the change of social context by using newspaper article. We show that wording in newspaper articles on bicycle riding in Japan has been changed during the past 11 years.