Abstract
This paper proposes a system for supporting discussion about community anticrime actions using bulletin board system (BBS) with view. In recent years, many crimes targeting children have been occurring throughout the country, and the importance of community anticrime actions including anticrime patrols and safety map creation has increased. However, such community anticrime actions have been performed independently without collaboration with others. The system proposed in the paper aims at supporting community anticrime actions comprehensively, including community map creation by children, map sharing, and online discussion about anticrime actions. In order to support online discussion by utilizing the community safety map created by children, the concept of BBS with view is employed. Recent trend in information visualization is to use views in communication and social data analysis, and discussion around views is expected to lead sufficient exploration and deep understanding of data set. In particular, BBS with view focuses on task-oriented discussion, and proposes graphical annotation and message retrieval functions as online discussion support functions. In addition to those functions, the paper also proposes an annotation retrieval function for performing task-oriented discussion more efficiently. The proposed system was actually used in the class of an elementary school, and online discussion based on the obtained map was performed with using the system. The results of analyzing the discussion show the discussion support functions of the proposed system are useful for having concrete discussion while referring to specific spots. Although the support facility of the proposed system is limited, more practical system can be developed based on the system by introducing additional features, such as sharing of criminal and accident information, and support function for avoiding oversight of information during discussion.
