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grey model
相关语句
  灰色模型
    Accuracy and Error Test of Grey Model
    灰色模型的精度及误差检验研究
短句来源
    Improvement and discussion on grey model GM(1,1) and GM(2,1)
    灰色模型GM(1,1)与GM(2,1)的改进和探讨
短句来源
    Variable Selection and Error Analyzing of Grey Model(1,n)
    灰色模型GM(1,n)的变量选择及拟合度分析
短句来源
    Comparision Between Accumulated Method and Direct Method of Grey Model
    直接建模与累加建模灰色模型特性的比较
短句来源
    Research on the Optimization of Grey Model GM(1,1)
    灰色模型GM(1,1)优化探讨
短句来源
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  “grey model”译为未确定词的双语例句
    The Accumulated Generating Operation in Opposite Direction and Its Use in Grey Model GOM(1,1)
    反向累加生成及灰色GOM(1,1)模型
短句来源
    The Accumulated Generating Operation in Opposite Direction and Its Use in Grey Model GOM(1,1)
    反向累加生成及灰色GOM(1,1)模型
短句来源
    A Grey Theory-Based Verhulst Grey Model for Prediction of Landslides
    灰色理论Verhulst模型用于滑坡预测的研究
短句来源
    Improvement on grey model GM(1,1) and its application
    GM(1,1)模型的改进及应用
短句来源
    Study on the optimal dimension of the grey model GM(1,1)
    灰色GM(1,1)模型最优维数的研究
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  grey model
Avoiding the Eddington approximation the remaining simplifications in the basic equations are discussed, the generalized dispersion relation is analysed, and some wave properties in a grey model are studied.
      
The proposed method cannot only enhance the prediction accuracy of the original grey model, but can also solve the jump data forecasting problem something for which the original grey model is inappropriate.
      
Modified Grey Model for Estimating Traffic Tunnel Air Quality
      
This study compared three forecasting methods based on their accuracy or absolute errors in forecasting air pollution in a traffic tunnel: the Grey model (GM), the Crank-Nicholson implicit scheme model, and the forecasting combination model (FCM).
      
In this study, grey model, both GM(1,N) and GM(0,N) models, is applied to determine the priority of technical measures by evaluating the impact of each technical measure in the system.
      
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This paper introduces the basic theory of grey control system and offers the grey model of farcasting the whole volume of water transportation.This model has some reference value for shipping department to make a plan.

介绍灰色控制系统的基本理论,并给出了全国水运货运量预测的GM(1,1)模型,可供水运部门制定规划时参考。

This thesis,starting from working out the arrest points and the infl ection points of the function curves of the grey mathema tical model GM(1:1 )and its residual correction model and residual period model, derives the conditions for empliying these grey models to obtain a higher class of accuracy,thus enabling the user to decide which model should be used in the light of the state of given initial sequency data. And a rough estimation can also be made with respect to whether...

This thesis,starting from working out the arrest points and the infl ection points of the function curves of the grey mathema tical model GM(1:1 )and its residual correction model and residual period model, derives the conditions for empliying these grey models to obtain a higher class of accuracy,thus enabling the user to decide which model should be used in the light of the state of given initial sequency data. And a rough estimation can also be made with respect to whether the fitting accuracy is satisfactory or not before the cal culation results are completely known.

从求得灰色数学模型GM(1.1)及其残差指数修正模型和残差周期修正模型函数曲线的驻点与拐点入手,导出使用这些灰色模型取得较高精度的条件,让使用者可依据初始序列数据的态势决定采用哪种数学模型,并且在结果未揭示以前便可大体上估计到拟合精度是否令人满意。

Based on the research work on the theoretical shortcomings of regular grey model-establishing method,combined with the forecast practice of gas exhaustion of a certain chemical plant,adirect model-establishing method is investigated and demonstrated.The method is formulated by using golden selection method to select background value after the linear or index alternation of originaldynamic data array. It is shown that,compared with regular grey modelestablishing method,thesuggested method possesses...

Based on the research work on the theoretical shortcomings of regular grey model-establishing method,combined with the forecast practice of gas exhaustion of a certain chemical plant,adirect model-establishing method is investigated and demonstrated.The method is formulated by using golden selection method to select background value after the linear or index alternation of originaldynamic data array. It is shown that,compared with regular grey modelestablishing method,thesuggested method possesses much more obvious superiority and rationality on the aspects of improvingthe randomness of the data array and the forecast precision. Moreover,this method helps to widenthe application of the GM(1,1)Model in environmental sciences.

在研究和指出灰色建模常规方法理论缺陷的基础上,结合某化工厂废气排放预测实践,初步探讨和提出了将原始动态数据序列经过线性或指数变换,采用黄金分割法选取背景值的直接建模方法。初步研究表明,该方法较灰色建模常规方法在改善序列随机性、提高预测精度等方面,具有较明显的优越性和合理性,拓宽了GM(1,1)模型在环境科学领域中的应用范围。

 
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