查询词典 regression analysis

The main research content is: Using the experimental of cutting force and roughness of high speed face milling cutter and high speed end milling cutter mill aluminium alloy and cast iron, analyze the rules of the high speed milling velocity, feed rate per tooth, milling depth and milling width to high speed processing. Use multiple linear regression method, set up surface roughness and the cutting force fluctuation models. Certify the regression model notability, and provide a reliable guarantee for the accuracy of function optimization. Based on the targets of productivity, manufacturing cost, surface roughness, cutting force fluctuation optimization model, according to research of the high speed milling parameters selecting restrict of work piece, machine, tool and safety, set up high speed milling parameters multi-object optimization system.

本文以已有的高速铣削机理及高速刀具技术研究成果为基础，结合高速铣削试验，进行了基于遗传算法的高速铣削参数优化研究与系统开发，主要的研究内容为：通过高速面铣刀和高速立铣刀加工铝合金和铸铁等材料的切削力和表面粗糙度试验，进行了铣削速度、每齿进给量、铣削深度和铣削宽度对高速铣削加工过程影响的研究；采用多元线形回归的方法，建立了切削力及其振幅和表面粗糙度模型，并对模型的显著性进行验证，为高速铣削参数优化模型的建立奠定了基础。

Has only one nonconstant regressor x, it is called a simple linear regression model, or two-variables regression model, or

等式y = b0 + b1x + u只有一个非常数回归元。

This paper infer a series of recursive equation based on lease square estimation in order to reduce computing amount, include recurrence equation of regression coefficient, total dispersion square sum, residual square sum, regression square sum etc.

为了减少计算量，本文推导了基于最小二乘估计的一系列递推公式，包括回归系数、总离差平方和、残差平方和、回归平方和等的递推公式。

Results the parameter estimates and it's stability of linear regression models is associated with the variation of explanatory variable between and within level 2units,and the relationship of parameter estimates and it's stability between linear regression models and variance component model is associated with level 2 residual variance or intatra-unit correlation.

结果 线性回归模型参数估计以及估计的稳定性与自变量在水平2单位间和水平2单位内的变异大小有关，线性因归模型与方差成分模型参数估计及其稳定性的关系与水平2残差方差或单位内相关系数大小有关。

Particularly, this article cites Gansu province's farming and animal husbandry to illustrate how we can get economic acknowledges by forming a regression model. A key point here is sample space is critical for the accuracy of the regression result.

特别的是，文章以甘肃省的农业和畜牧业为例，解释了通过建立回归模型所能获得的重要经济意义，并明确指出数据样本的选择是决定回归模型准确程度的关键因素。

The importance of testing for serial correlation in the error terms of a linear regression model has been recognized for many years. Some authors have investigated in detail this problem in the linear regression model.

多年来，人们已经认识到检验线性回归模型中误差项是否存在序列相关的重要性，(来源：ABc4C论文网www.abclunwen.com)并且对这个问题进行了广泛深入的研究。

In this thesis, we introduce three indexes that are used to evaluate the main business firstly. Theyre profit of main business, cashflow of main business and integrated index of main business. Then, we construct a series of regression models of assets structure with profit of main business and cashflow of main business, which signalize the current assets and the fixed assets help them; the long-term investments hinder them; the other assets help or hinder them uncertainly, and even have nothing to do with them sometimes. Finally, we construct the regression models of assets structure with integrated index of main business, and put forward a method to optimize the assets structure.

本文首先将主营业务指标分为主营业务利润、主营业务现金流量与主营业务综合指标；然后，通过构建资产结构与主营业务利润、资产结构与主营业务现金流量回归模型，发现流动资产、固定资产对主营业务利润和主营业务现金流量为正影响，长期投资对主营业务利润和主营业务现金流量为负影响，其他资产对主营业务利润和主营业务现金流量影响时有时无，时正时负；最后，在此研究基础上，构建资产结构与主营业务综合业绩指标回归模型，并提出优化资产结构的方法。

In part 1, some basic statistical concept and algebra operations are reviewed, simple regression and multiple regression models are introduced.

本课程将提供学生如何应用实际的资料，建构适当的模型，以及进行模型推估结果的检定，主要内容包括三个部分；1。

The analytic method of principle component regression is applied,and compared with the results of multi stepwise regression.

结果 ：消除了多元回归分析中由于共线性产生的参数估值不稳定性及结果中不好解释的现象。

The oxidative peak current was linear to diethyl stilbestrol concentration over the range from 2.00×10-8 to 4.00×10-5 mol/L, the linear regression equation was ip= 5.74+10.377×106c, regression coefficient was 0.994, the detection limit was 5.00×10-9 mol/L .

氧化峰电流与己烯雌酚的浓度在2.00×10-8～4.00×10-5 mol/L之间呈线性关系，线性回归方程为：ip= 5.74+10.377×106c，回归系数为：0.994，检出限为5.00×10-9 mol/L。

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。