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曲线回归

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Furthermore, through the empirical research on the Philips Curve in China, the paper puts forward the idea of rational regression with which theory develops, and finally tries to find out the deep cause of their alternant effect in the short term.

通过我国菲利普斯曲线的实证研究,对失业与通货膨胀理论发展理性回归的思考,并阐释其在短期内有交替作用更深层次的原因。

In this paper, some researches on estimator of parameters in the growth curve model are considered.

本文主要研究了生长曲线模型中回归系数的参数估计问题。

The average error of fitting and predicting were 1.34% and 1.21% of the actual mean respectively, Model GM(1,1)was better than the Linear Regression and Exponential Curve Model for prediction.

本文还将灰色系统GM(1,1)模型与常见的直线回归模型和指数曲线模型进行了比较,结果表明GM(1,1)模型的预测效果较上述两种模型好。

In the method of space constant, the relation between inter-electrode distances and correlation coefficients were fitted to two exponential decay curves.

在空间常数的方法上,我们采用两个指数递减之曲线,分别对不同电极间距之相关系数回归。

In this article, genetic algorithms are used in regression analysis of technical parameters of metallic centrifugal casting machine with water cooling, resulting in a fitted curve reflecting the internal properties of the experimental data.

此文利用遗传算法对水冷金属型离心铸管机生产工艺参数的实验数据进行回归分析,得到了反映实验数据内部规律的拟合曲线。

Each end point of an imaginary linear regression trend line makes up a path for this curve. All these imaginary trend lines are placed at nearest distance to the closing prices through 'least squares' method applied to the input set bars.

每一根绘制的线性回归趋势线的末端标志着曲线的路径,而所有的趋势线以价格的最小距离摆放,通过输入的K线的最小方差方法。

The presentation of impurities and action are one of the major reasons for causing fatigue invalidity.

得出反映其表面磨损特性的回归曲线方程和磨损速率方程,分析了陶瓷材料的显微结构,硬度及润滑状态与其磨损性能的关系

The correlative coefficients of linear regression function for isochronous stress-strain curve are all higher than 0.92, and the ratio of long-term strength to instantaneous strength reaches 94.39%, which indicate that the whole creep of fine sandstone specimen is weak.

应力-应变等时曲线线性回归函数的相关系数均高于0.92,长期强度与瞬时强度之比达94.39%,证明细砂岩试样的整体蠕变特性不强。

The main content of preparation before scoring is selection of characteristics, which mainly uses Logistic regression, contingency table analysis and artificial neural network. Personal credit scoring and evaluation mainly uses general discriminant analysis, refined decision tree model, improved genetic algorithm, probability neural network and behavioral scoring model. The effect test of personal credit scoring includes fitting effect test and fitness test. The former involves right prediction rate, Kappa consistency test, ROC curve, and the latter includes likelihood ratio test, Hosmer-Lemeshow test, etc.

评分前的准备工作主要是特征变量的筛选,其中使用的主要方法为Logisitic回归、列联表分析和人工神经网络;本文使用的个人信用评分与评估方法为广义判别分析、精练决策树模型、改进遗传算法、概率神经网络和行为评分模型;个人信用评估的效果检验包括拟合效果检验和拟合优度检验两个方面,前者涉及的方法有预测的正确率、Kappa一致性检验、ROC曲线,后者主要包括似然比检验、Hosmer-Lemeshow检验等。

The former involves right prediction rate, Kappa consistency test, ROC curve, and the latter includes likelihood ratio test, Hosmer-Lemeshow test, etc.

评分前的准备工作主要是特征变量的筛选,其中使用的主要方法为Logisitic回归、列联表分析和人工神经网络;本文使用的个人信用评分与评估方法为广义判别分析、精练决策树模型、改进遗传算法、概率神经网络和行为评分模型;个人信用评估的效果检验包括拟合效果检验和拟合优度检验两个方面,前者涉及的方法有预测的正确率、Kappa一致性检验、ROC曲线,后者主要包括似然比检验、Hosmer-Lemeshow检验等。

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