装载机销售量的非等间距Verhulst直接模型研究

Non-Equal Interval Verhulst Direct GM(1,1) Model and Its Application to Loader Sales Predicting

研究了装载机销售量的非等间距Verhulst GM(1,1)直接模型,该模型不需要累加生成和累减生成,适合于等间距数据建模,也适合于非等间距建模.计算实例表明,该预测模型有更好的适应性和更高的精度,使用方便,值得在装载机销售量预测中推广使用.

The non-equal interval Verhulst direct GM （1,1） model for loader sales predicting is built. The new model need not pre-process the primitive data, accumulated generating operation （AGO） and inverse accumulated generating operation （IAGO）. It is not only suited for equal interval data modeling, but also for non-equal interval data modeling. The computing example shows that the new model has better adaptability, higher accuracy and very convenient. The new model is worth and applying in loader sales predicting.