Incidence Degree Model of Interval Grey Number Based on Attitude Index

According to the fact that the existing model of grey incidence is only appropriate for real number sequence but not for interval grey number sequence, the interval grey number sequence is transformed into sequence with attitude index by introducing the attitude index of decision maker. When the attitude index of decision maker is known, the sequence with attitude index is transformed into real number sequence. And grey incidence degree embodying the attitude of decision maker is obtained by building incidence degree model of real number sequence with the attitude index of decision maker. The incidence degree model of interval grey number with attitude index of decision maker is proposed. As the decision maker can build incidence degree model through adjusting the attitude index, incidence degree model is more practical than traditional incidence degree model. Finally, a practical example is given to illustrate the proposed model.