非线性回归模型NLRM ？
计算线性与非线性回归模型的能力是R的强大功能之一。
One of r's strengths is its ability to calculate linear, as well as nonlinear regression models.
给出基于最小一乘准则的非线性回归模型的参数估计算法。
In this paper, a parameters evaluation algorithm based on the least absolute criteria for non linear regress is developed.
本文给出了若干近似公式，以分析非线性回归模型的最小二乘估计的残差。
Several approximate formulas are given for residual analysis of the least square estimator in nonlinear regression model.
本文将讨论综合运用非线性回归模型和时间序列分析的方法进行变形预报。
This article demonstrates that deformation forecast will be performed by a comprehensive method of non linear regression model combined with time series analysis.
边坡变形的复杂性决定了运用非线性回归模型很难准确解决边坡变形规律。
Because of complex deformation on slope, it is difficult to handle the regular pattern of deformation on slope by applying non linear regression model accurately.
在此基础上导出了带约束非线性回归模型度量影响的诊断统计量及其曲率表示。
By the curvature measures, the diagnostic statistics of measuring influence in nonlinear regression with restriction are obtained in terms of curvature arrays.
针对温度对废气氧传感器输出的影响，建立了带温度校正的EGO传感器非线性回归模型。
For the influence of temperature to EGO sensor's output, its nonlinear regression models which include temperature's modifying term be achieved.
研究了带有约束的均值漂移和方差加权的混合非线性回归模型．得到了相应的一阶和二阶诊断统计量。
We study restriction of Nonlinear Regression Diagnostic Models with case-weights and meanshifte simultanously, and some new diagnostic statistics are derved.
和普通的非线性回归模型一样，具有相关误差的非线性模型也存在异方差检验问题，但通常还要检验相关性。
As in ordinary regression models, the problem of the heteroscedasticity test still exists in nonlinear models with correlated errors, but, the test for correlation also needs to be considered.
通过分析道路交通事故发生的特点，从不同的角度，建立了模糊图模型、非线性回归模型及基于灰色理论的灰色预测模型。
The predictive models of fuzzy graph, nonlinear regression and with grey theory are set up from different aspects by analyzing the features of road traffic accidents.
仿真和实算结果表明，对于一大类线性和非线性回归模型，该方法给出的回归模型的参数估计效率的估计更接近模型参数估计效率的真值。
Simulation results and real measuring data calculations show that the precision estimation efficiency can be obtained by our method for a large class of linear and nonlinear regression models.
非线性回归和二次响应面模型。
采用多元非线性回归法得到了后动态再结晶模型。
The model of post-dynamic recrystallization has been obtained by using multivariate nonlinear regression analysis.
根据试验数据，应用多元非线性回归方法建立了密度与摆放位置关系的数学模型，并讨论了改善烧结密度的措施。
Maths model is built up to show the relationship of density with locating place using multiple nonlinear regression analysis of experimental results.
文章通过对一套市场价格预测模型体系的介绍，综合运用时间序列模型、多元非线性回归和组合模型来预测市场价格走势，探索从多角度综合预测市场价格的问题。
In this paper, a new model system is introduced, which synthetically applies time series model, nonlinear regression and combination forecasting model to forecast the change of the market price.
最小二乘法在化工中广泛用于数据拟合的线性和非线性回归及模型参数估值。
The least square method is popularly used in linear and non-linear regressions for data fitting and estimating model parameters.
提出了一种基于分类技术的支持向量回归方法，解决数据分布未知、数学模型未知的非线性回归问题。
A support vector regression method based on classification is presented to solve the nonlinear regression problem with unknown data distribution and mathematical model.
根据实测的数据，采用一元线性、多元线性和非线性回归进行拟合，得到34个红海榄幼苗主要形态因子和生物量的回归模型。
Based on the data observed, 34 regression models on the morphological variables and biomass of the seedlings were set up using linear, multilinear and non linear regression.
最后，利用验证数据对混合模型方法与传统的非线性回归模拟方法进行精度比较。
Finally, the precision of mixed models was compared with the precision of conventional nonlinear ordinary regression analysis method based on validation data.
提出了一种结合非线性回归技术的灰色GM(1,1)模型的改进模型。
An improved grey GM (1, 1) model using a technique of nonlinear regression is proposed.
即把一元非线性回归和多元线性回归结合起来，构造一个混合回归模型，这样就减小了模型的残差平方和，从而提高预报的准确性。
We combine unitary nonlinear regression with multivariate linear regression, it can reduce the error sum of squares of the model and improve the precision of forecast.
然而，对各种具体的相依数据的统计模型(如相依数据的非线性回归和相依数据的非参数回归模型)的研究还不够充分和不够完备。
So far, however, the theory that studies specially the statistical models with dependent data such as nonlinear regression and nonparametric regression models is not very satisfactory.
通过对渗碳层中碳的分布进行非线性回归处理，建立了渗层的碳分布模型及渗碳层深度与渗碳层中电磁特性之间的数学模型。
By using a nonlinear reducing of the data, a carbon distribution model and a mathematical model referring to the relationship between the case depth and the electromagnetic characteristics are built.
同时考虑样地的随机效应、观测数据的时间序列相关性及不同初植密度的混合模型模拟精度比传统的非线性回归方法模拟精度高。
The precision of mixed model considering plot random effects, time series error autocorrelation and different plantation density at one time is better than that of ordinary regression analysis method.
建立了该菌株分批发酵合成红谷霉素的菌体生长、产物合成和葡萄糖消耗的动力学模型，并对模型参数进行了非线性回归。
The models were developed and provided a reasonable equation for biomass, production and glucose. And parameters were obtained by using non-linear regression techniques.
通过非线性回归算法对模型参数进行回归计算，最终取得整个淬火过程的换热系数公式。
The model parameters were calculated through the nonlinear regression algorithm. Thus, the formula of heat transfer coefficient for the quenching process was obtained.
通过非线性回归算法对模型参数进行回归计算，最终取得整个淬火过程的换热系数公式。
The model parameters were calculated through the nonlinear regression algorithm. Thus, the formula of heat transfer coefficient for the quenching process was obtained.
应用推荐