查询词典 estimation

A new non-linear quadratic programming Bayesian prestack three-terms inversion method is developed; Firstly, this method is based on Bayesian parameter estimation theory, Gaussian distribution is used for likelihood function and modified Cauchy distribution is used for prior distribution; Secondly, covariance matrix is used to describe the degree of correlation between the parameters; rock physics relations are used to constrain the inversion results; at last, this method is transformed into non-linear quadratic programming problem, and inversion results are acquired under several constraints.

本文提出了一种基于非线性二次规划的叠前三参数反演方法。首先基于贝叶斯参数估计理论，假设似然函数服从高斯分布，并使待反演的参数服从于改进的Cauchy分布，从而提高了反演结果的分辨率；其次用协方差矩阵来描述参数间的相关程度，进一步提高了反演结果的稳定性；最后将问题转化为一个非线性二次规划的求解问题，并在多种约束下得到问题的解。

In Chapter 4, on the basis of introducing the theory of linear operator semigroup and the Cauchy problem in Hilbert space, this dissertation has researched the method on solving solution of distributed parameter system, and the model estimation and optimal control of the nonlinear distributed parameter system.

本文第四章在介绍线性算子半群理论及希尔伯特空间中的柯西问题的基础上，研究了分布参数系统的近似解求解方法，一类非线性分布参数系统的模型辩识和最优控制等问题。

Slides with borderline or low cellularity should be assessed by estimation of average cell number in at least 10 fields.

简释：临界状态或细胞数量少的涂片，应至少在10个视野中加以判断平均细胞数量。

The simulation results show that estimation performance of the proposed algorithm is much better than the standard particle filterand central difference particle filter.

仿真结果表明，所提出算法的估计性能要明显优于标准的粒子滤波和中心差分卡尔曼粒子滤波。

In order to improve tracking estimation accuracy of existing central difference Kalman particle filter,a new particle filter algorithm based on iterative measurement update CDKF is proposed.

为了提高中心差分卡尔曼粒子滤波算法跟踪时的估计精度，提出了一种基于迭代测量更新CDKF的粒子滤波新算法。

The paper consists of three parts. First, we give the calculation for every order central moment for the Logistic population, mean vector and covariance matrix of the order statistic of random sample from the Logistic population, and means of several special functions for the order statistic of random sample from the Logistic population. Secondly, we discuss the parameter estimation for the Logistic population. Finally, we solve the question about the goodness-of -fit test for the Logistic population.

研究的主要内容分三部分：第一部分是关于Logistic总体各阶中心矩、样本次序统计量期望向量与协方差阵及若干个特殊的样本次序统计量函数期望的计算问题；第二部分是关于Logistic总体分布参数的估计问题；第三部分是关于Logistic总体的拟合优度检验问题。

The most important step in DBS imaging-doppler centroid estimation technique is studied in detail.

2深入研究了DBS成像模式中的关键步骤——多普勒质心估计问题。

Based on the studies conducted by some authors at home and abroad, our paper describe the morphological characteristics of beak and review the studies of beaks that applied in Cephalopod biology, taxonomy, stock estimation and feeding habits of predators.

本文根据国内外学者对其研究的成果，系统描述了角质颚的形态特征，对其在头足类生物学和分类地位、资源量估算、捕食动物的食性分析等方面的应用研究做了综述。

Function and limit, one-variable calculus and its application, ABC of progression and multiple-variable calculus, determinant, matrix and its calculation, system of linear equations and quadratic form, probability of occurrence, chance variable, law of large numbers and central limit theorem, sample and parametric estimation, variance analysis, regression analysis.

Advanced Mathematics 1 [Course Code 1040008 MAT114] 本课程主要介绍函数和极限，一元微积分和它的应用，ABC 级数和多元微积分，行列式和矩阵的应用，线性方程和二次方程式，事件的概率，偶然性变量，大数定律和中心极限定理，样本和参数估计，方差分析，回归分析。

To overcome these disadvantages, the Strong Track Filter is introduced to estimate the motor states, which can improve the estimation performance of abrupt change states and the robustness of variable parameters.

本文利用强跟踪滤波，提出了基于STF的感应电机状态估计算法，有效提高了对于突变状态的估计性能和参数变化的鲁棒性。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。