System Identification of Decision Making Process in Gold Trading Game

Abstract

Decision-making processes are being researched in association with making psychological models and experiment technique. However, there is no models using transfer functions about such process to the knowledge of the authors. In this research, a decision-making process model consisting of proportional, integrator, and derivative elements was constructed, and identified using 30 volunteers' input-output data of obtained by the gold trading computer game.The ratio of Ki and Kd, which are the coefficients of integrator and derivative elements respectively, were varying. As that can be regarded as individual differences, the model was identified reasonably. However, the game was played only four times per a person, and the total recall ratio of Ki and Kd was only 15%. Thus, the re-examination with changed method is necessary. And, a decision-making process model with consideration of learning is also required, because humans could learn even in short process like one in the gold trading.