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GM(1,1)模型背景值的优化

, PP. 146-152

Keywords: GM(1,1)模型,背景值,初始值,参数优化

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Abstract:

?背景值是影响GM(1,1)模型精度的关键因素之一。当前背景值优化的改进模型均取得较好的效果,但优化后的背景值公式多数比较繁琐,并且部分优化模型不适用于高增长型序列。本文根据模型的指数性质以及积分特点,分析背景值的构造原理,利用黎曼积分的核心思想,提出以不规则梯形面积取代传统梯形面积构造法,对传统GM(1,1)模型背景值进行优化。通过实验验证了新模型具有白指数律重合性,不仅适用于低增长指数序列,亦适用于高增长指数序列,并且优化公式简单,具有较高的实用性与可靠性。

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