系统工程理论与实践
繫統工程理論與實踐
계통공정이론여실천
Systems Engineering—Theory & Practice
2014年
2期
408~415
,共null页
GM(1, 1 α)模型 背景值 发展系数 灰色作用量 相对误差
GM(1, 1 α)模型 揹景值 髮展繫數 灰色作用量 相對誤差
GM(1, 1 α)모형 배경치 발전계수 회색작용량 상대오차
GM(1, 1, α) model; background values; development coefficient; grey action; relative error
为了研究灰色GM(1,1,α)模型中背景值的变化对模型相对误差的影响,分析了GM(1,1,α)模型的建模机理与过程,提出了该模型的二级参数包;通过模型的二级参数包重点讨论了背景值的变化与模型的发展系数、灰色作用量之间的关系;从理论上得出了背景值与模型的发展系数、灰色作用量之间的具体表达式;进而得到了背景值与相对误差之间的具体表达式,并研究了它们之间的变化关系,从而达到通过调整背景值的大小来减小模型相对误差的目的;最后通过实例对这一结论进行了验证.
為瞭研究灰色GM(1,1,α)模型中揹景值的變化對模型相對誤差的影響,分析瞭GM(1,1,α)模型的建模機理與過程,提齣瞭該模型的二級參數包;通過模型的二級參數包重點討論瞭揹景值的變化與模型的髮展繫數、灰色作用量之間的關繫;從理論上得齣瞭揹景值與模型的髮展繫數、灰色作用量之間的具體錶達式;進而得到瞭揹景值與相對誤差之間的具體錶達式,併研究瞭它們之間的變化關繫,從而達到通過調整揹景值的大小來減小模型相對誤差的目的;最後通過實例對這一結論進行瞭驗證.
위료연구회색GM(1,1,α)모형중배경치적변화대모형상대오차적영향,분석료GM(1,1,α)모형적건모궤리여과정,제출료해모형적이급삼수포;통과모형적이급삼수포중점토론료배경치적변화여모형적발전계수、회색작용량지간적관계;종이론상득출료배경치여모형적발전계수、회색작용량지간적구체표체식;진이득도료배경치여상대오차지간적구체표체식,병연구료타문지간적변화관계,종이체도통과조정배경치적대소래감소모형상대오차적목적;최후통과실례대저일결론진행료험증.
In order to study the influences on model relative error made by the change of grey GM(1, 1, α) model background value we analyzed the modeling mechanism and process and put forward the level 2 parameters pack of the model. We focused on the relationship among the change of the background value, the model dew;h)pment coefficient and the grey action by the model's level 2 parameters pack. In theory we concluded the concrete expression among the background value, the development coefficients and the grey action. Then we get the concrete expression between the background value and the relative error and study their relationship on changes. Thus it achieved the result that we can reduce the model relative error through adjust the value of the background. Finally, this conclusion was verified through an example.