Estimation of execution timing of human action considering causality between action and situation

In order to realize a system to support human actions, the system should be able to estimate the next human action. Therefore, we have proposed a modeling method of human actions based on the causality between the situation around a person and the human action change. Our previous modeling method makes it possible to estimate the next human action. However, in order to give a suitable support to a person, it is necessary for the system to estimate not only the next human action, but also its execution timing. In this paper, we propose a modeling method of human actions for estimate the execution timing of the next human action by expanding our previous method. In addition, an early estimation method of the next human action and its execution timing is also proposed.