Abstract
The downsizing of computers and sensors has made it possible for people to easily carry a computer with them during their daily lives. The data related to user's life experiences is called "lifelog" and it can easily be collected these days. Although lifelog research has been conducted for a long time, its application is still under development. In our research, we aimed at structuring of a lifelog for the purpose of the application such as tools to recall memories. We actually captured lifelog data with a device that has multiple sensors, and we estimated the participants' activities. Moreover, we efficiently showed the estimated results on the viewer we created. Finally, we verified the effectiveness of the research in several tests.
