2014 Volume 19 Issue 3 Pages 357-366
If we could know whether an intended party can answer a phone call or not, we could avoid calling which the intended party couldn't answer. However, we can't know it before calling. This paper describes development of a system that estimates possibility of answering phone call of a user by detecting and analyzing user's status from data of sensors of his/her smartphone. In addition, this paper describes an experiment to evaluate the effect of showing the possibility. The results show that the system is effective in a day when both possible hours of answering phone call and impossible hours of it are included.