Abstract
The general term of the malfunction condition which treating the information management system accompanied by VDT (Visual Display Terminals) is called technostress, and is one of the social problems. If a system is able to recommend an improvementof work environment and rest to a user, it will lead to reduction and prevention of fatigue of a user. However, the internal state offatigue of a worker is an uncertainty domain, and the system needs to estimate the data in which it is difficult to observe directlyusing observed value. In this paper, we deal with fatigue of the worker during VDT work, and construct a model using Bayesiannetworks. In order to obtain a better reasoning result, it is necessary to deal with VDT work information and user information such asboth psychological and physiological information, comprehensively.
