抄録
It is an effective means to decrease the personnel number of team decision-making as one of the ways to meet the needs of the reduction of decision-making time. On the other hand, if the personnel number is too little, it has a possibility not to obtain good results. This paper shows a model of decision-making time as the sum of theme understanding time and opinion adjustment time. Factors of the model are the personnel number, the disconcordance index of opinions and the learning phenomenon. This model almost coincides with theoretical curve.
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