Abstract
People use a variety of services such as railway and communications everyday, thereby, a huge amount of log data has been generated and accumulated in a social infrastructure. For the purpose of improvement and optimization of the customer service, we develop methods of extracting daily life pattern and analysing behavioral characteristics of people based on the social life log data. In this paper, we propose the method of extracting daily life pattern from the log data related to mobility and then show the result of an experiment using urban transportation census.