查询词典 estimate

In this paper, EM algorithm is used to estimate the parameters of exponential distribution, Weibull distribution and lognormal distribution based on randomly right censored data.

本文将EM算法用于随机右删失数据下指数分布、Weibull分布和对数正态分布的参数估计中。

The random cascade model with a lognormal distribution is used to simulate the infiltration process in soils, and the different methods are applied to estimate the model parameters.

随机层叠模型中具有对数正态分布性质的随机层叠发生器被用来描述水流入渗过程，不同的方法被用于模型参数求解。

I will introduce a method to solve this problem when data come from some common life distribution, such as Weibull distribution and Lognormal distribution. In chapter 1, we introduce background of grouped data and how to analyze them with classical methods. In chapter 2, we introduce EM algorithm and show that the estimation of the parameters get through this algorithm is convergent under certain conditions. In chapter 3, we use EM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available.

第一章首先介绍分组数据问题的背景以及如何利用经典的统计方法对分组数据进行分析，并指出分析过程中所遇到的困难；第二章将介绍一种处理不完全数据时的常用算法，EM算法，并说明利用这种算法所得到的估计具有良好的收敛性；第三章将利用EM算法对基于分组数据的威布尔分布和对数正态分布进行参数估计，并进行模拟表明此方法的可行性与有效性。

True that PS3 is a loss leader, you fail to estimate which fraction of that loss is due to Blu-ray and which to the Cell ...

诚然， PS3的是一个失去领袖，你不能估计这部分的损失是由于蓝光和，其中以细胞。。。

In this paper,a fast recurrent algorithm is proposed to estimate time congestion probability and cell loss rate of this system.

本文给出了一种计算该排队系统的时间拥塞率和信元丢失率的快速算法，并且该算法具有递推特性。

Objective To estimate the superiority of liposuction assisted by low-energy laser.

目的评价低能量激光辅助吸脂术临床应用的优越性。

Assuming an average daily rice consumption of 200 grams--a lowball estimate in Asia--the researchers calculate that arsenic levels would have to be as low as 50 μg per kilogram to remain below the WHO limit for water.

在亚洲，若保守估计为平均每天消费大米200克，研究人员估计稻谷中砷的含量必需低至每千克50微克仍然低于世卫组织所规定水中砷的含量。

First, the fuzzy logic systems are applied to estimate the boundary of the lumped uncertainties.

其中，系统的输入讯号是一种具有扇形特性的非线性函数。

Lutz again admitted it is his best estimate the Volt will cost right around $40,000?

卢茨再次承认这是他的最佳估计数的电压将成本约4万美金的权利？

Some decision-makers seek machination companys help, but there is no a canonical estimate method, say nothing of right decision.

但是，房地产业在这方面的决策现状却不容乐观，房地产企业大都存在这样一个问题：即对决策方案的选择带有很大的随意性，有些决策者往往把自己的经验和好恶作为选择的标准，而不进行严密的理论分析，有些决策者虽然也委托策划公司帮助策划，但是决策者却没有一个比较规范的评价方法做出科学的评价，更谈不上科学决策了。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。