查询词典 regression estimate

For polychlorinated biphenyl, QSRR model was built by principal component regression. A regression model with correlation coefficient of 0.9999 and standard deviation of 2.4636 was obtained.

分别对同一结构特征的分子体系和不同结构特征的分子体系进行了程序升温保留指数与其结构之间的关系研究，并建立相应预测模型。

In order to improve the high-performance concrete quality of longer brittleness, lower tensile strength, particularly the less descending branch in stress-strain curve compared with that of ordinary concrete. The breakthrough of this thesis lies in the mixture of short carbon fiber. Four factors such as water-binder ratio, volume ratio of short carbon fiber and blending value of high efficiency water-reducing admixture were selected as variable. Experiment was carried out by utilizing uniform design. Regression equation was established by regression analysis of the compression strength and the split tensile strength separately utilizing SPSS software. The process of optimization was obtained with the aid of MATLAB. Finally the optimized ratio was acquired.

为了改善高强混凝土由於水泥自缩、湿涨造成的脆性大、抗拉强度低，特别是应力－应变曲线的下降段不及普通混凝土的特点，本文以掺入短碳纤维为突破口，选取水胶比、砂率、短碳纤维的体积比、高效减水剂掺量四个因素作为变量，利用均匀设计安排试验，用SPSS软件对抗压强度和劈拉强度分别进行回归分析而得到回归方程，用MATLAB进行优化处理，进而求出最优配比。

The result showed that the single correlation between the characters of weight and heart girth, chest width and circumference of cannon bone was significantly different. The correlation between weight and heart girth, chest width, circumference of cannon bone was highly positive correlation. Among seven regression models, the correlation index of six regression models was over 0.7, but that of 60 days was 0.452. The result suggested that selecting body weight was efficient through heart girth, body high, chest width and circumference of cannon bone.

对不同日龄各项体尺与体重建立的了回归方程，结果表明，60日龄回归模型的决定系数R~2=0.452，其它6个回归模型的相关指数均在0.7以上，其中方程1、5、6、7的相关指数都在0.9以上，表明这些回归方程中各项体尺指标与体重之间相关密切，根据胸围、管围、体高和胸宽对体重的选择都是有效的，具有一定的参考作用。

The core of this paper is to analyze and probe into ridge regression from different ideas, such as the existence of ridge parameter K, the choiceness of ridge estimation K , the choice of ridge parameter K and the methods of regression coefficients.

本文简单介绍了主成分回归，阐述了主成分估计方法的原理和优缺点；重点是从不同的角度不同的思想出发，对最常见的岭回归估计法进行了深入的探讨：岭参数K 的存在性，岭估计的优良性，岭参数K 的选择方法等。

According to the annual warning water levels from the Jinchengjiang Guaging Station on the Longjiang River, with 500 hPa circulation index, circulation characteristic amount, local climate and etc., analysis can be made with variance cycle, multiple linear regression, stepwise regression procedure.

1引言 龙江河流域发源于贵州省荔波县境内，流经桂西北地区中部，到达柳州市后流人柳江河，全长390公里。龙江河流域拥有10多个中小型梯级电站，具有发电、灌溉、航运、养殖等功能，是桂西北地区发展经济的主要河流。

At present, semiparametric model, functional coefficient model and quantile regression are key issues in the field of regression analysis, they have been applied widely in multi-variable data analysis, economics and finance.

半参数模型、变系数模型和分位数模型是当今回归分析中研究的热点问题，在实际问题尤其是在多变量数据分析、经济学、金融学中有着广泛的应用。

Especially, by an example for analysis of the authoritical boston housing prices data, we emphasize on applying an new regression model and method -- semiparametric functional coefficient quantile regression and two-step estimation method to show the great explaination of the new

介绍了非参数回归和半参数回归的发展历程及其估计方法，还介绍了分位数回归的相关理论及其研究现况。在半参数、变系数回归和分位数回归的基础上，进一步讨论了非参数和半参数的变系数分位数回归模型和局部多项式线性估计法。

Regression and Correlation, coefficient of regression, method least square, coefficient of correlation and determination.

教学目的：通过学习掌握回归关系和相关关系的区别及联系，回归和相关分析的基本原理和方法。

The regression coefficient of any category was divided by the maximum regression coefficient so as to get the score of this category.

将各项指标的回归系数转换为简单分数，相加后得到每一例患者的预后评分。

A regression coefficient of 0.863, indicates a satisfactory regression equation.

回归系数 r 为0.863，说明方程是理想的。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。