向量夹角余弦的IOWHA算子的变权系数区间型组合预测模型

The Variable Weight Coefficient Interval Combination Forecasting Model Based on Vectorial Angle Cosine and IOWHA Operator

客观世界中人们会用区间数来描述不确定和不完备的信息,由此开展区间型的组合预测方法的研究很有意义.将区间数的左、右端点分别视作时间序列,以向量夹角余弦为准则,结合IOWHA信息集结算子,借鉴实数型组合预测的思想,将实际值区间数和变权系数组合预测值区间数的左、右端点序列分别建立最优组合预测模型,最后引入偏好系数转换成单目标最优组合预测模型而实现求解.

In the objective world people use interval number to describe the uncertain and incomplete informa- tion, the interval combination forecast method of study is very meaningful. The left and right endpoints of interval number separately as a time series, by the vector angle cosine and information IOWHA operator, draw lessons from the thought of combination forecast, respectively the optimal combination forecast model is set up to the actual value interval number and the variable weight coefficient combination forecast interval number sequence of the endpoint. Finally, the introduction of preference coefficients into a single objective to achieve the optimal combination forecas- ting model and be solved.