Extracting repeater knowledge from citizen report data.

As citizen report systems are introduced in municipalities worldwide, research on extracting knowledge useful for resolving local issues from accumulated citizen report data is being actively promoted. However, to utilize this knowledge in practice, clarifying the characteristics of the participating reporters and the bias caused by them is necessary. This study focuses on repeat reporters who play an important role and extracts knowledge regarding their behavioral characteristics from citizen report data. [ABSTRACT FROM AUTHOR]