查询词典 grouped data

In chapter 5, we use MEM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available.

第五章将利用MEM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。

UPGMA cluster analysis of the genetic distance data grouped the cultivars studied according to their pedigree information.

UPGMA聚类分析结果表明，品种间的遗传距离与系谱关系基本吻合。

In this paper, we try to study the problem of estimating parameters in some life distribution by grouped data.

本文将考虑若数据来自某些更为常见的寿命分布，如威布尔分布、对数正态分布，这类问题该如何解决。

Data is grouped under general categories for each country. Standardized classifications make our databases more user-friendly.

每个国家的数据都是按照通用分类标准划分，标准分类让数据库的用户使用界面更易操作

Character data is grouped into text nodes.

字符数据被分组到文本节点中。

In this part,we give the description of the competing risk mixture model and the likelihood function with grouped data.3.Asymptotic properties of MLE.

这一部分我们给出了本文中竞争风险混合模型的描述及分组数据下的似然函数。

Model description and likelihood function with grouped data.

第二部分：模型与似然函数。

The investigators examined fetal outcome data from 972 pregnancies collected from 1997 to 2002 in a nested case-control study. The participants were nulliparous and had no known medical complications. Pregnancies were grouped in eight categories based on the presence or absence of combinations of hypertension, hyperuricemia, and proteinuria.

研究者检验自1997年至2002年一项病例控制试验中972次怀孕的妊娠结果，受试者皆为第一次怀孕，而且没有已知的其他疾病；根据高血压、尿酸过高、与蛋白尿的有无，将怀孕分为8个项目。

Data mining, known as Knowledge Discovery in Databases, is defined as the nontrivial extraction of implicit, previously unknown, and potentially useful information from a great volume of data accumulations. It uses machine learning, statistical and visualization techniques to discover and present knowledge in a form being easily comprehensible to humans. Data mining is an advanced data processing technique.

数据挖掘是在数据和数据库急剧膨胀的背景下，为解决"人们被数据淹没，但却饥饿于知识"这种困境而产生的，也是数据库技术、人工智能技术、统计技术、可视化技术等发展的结果，其目的就是从大量的、不完全的、有噪音的、模糊的数据中提取出隐含在其中的潜在有用的可信、新颖并能被人理解的信息和知识，它是一种高级的数据处理过程。

In this paper a genetic algorithm four-dimension data assimilation system was applied to the more complex MM5 model, we verify the performance of the genetic algorithm assimilation system, we take the a heavy rainfall process during 04-05, July, 2003 as the experimental research object, and carry out data assimilation experiment of actual observation data, compare the experimental results of the genetic algorithm assimilation system and MM5 adjoint model assimilation system with the experimental results without assimilation, the following is the result:genetic algorithm assimilation system is used not only in a barotropic primitive equation but also in the complex model, MM5, for example, in the ideal experiment the result of the genetic algorithm assimilation system is better than the MM5 adjoint model assimilation system, in the assimilation experiment of actual observation data, whichever assimilation system is used, the initial field of numerical prediction model is effectively improved and the prediction effect of physical field and rainfall are somewhat enhanced.

本文将遗传算法的四维同化系统运用到更复杂的MM5模式中，在理想实验中验证遗传算法同化系统的性能，并以2003年7月4日"南京暴雨"作为研究对象，进行了实际观测资料的同化，并将遗传算法同化系统和MM5伴随模式同化系统得到的结果跟未同化的结果进行了比较，结果如下：遗传算法同化系统不仅可以用在正压原始方程模式上，同样也可以用在MM5等复杂模式上，理想实验证明了遗传算法同化系统优于MM5伴随同化系统，在实际观测资料同化中，采用两种方法的同化系统都能有效地改善数值预报模式的初始场，能在一定程度上提高物理量场和降水量的预报效果。

Sodium citrate; calcium carbonate; calcium hydroxide; potassium bicorbonate; magnesium carbonate; ferrous sulphate; Zinc sulphate; copper sulphate; manganese sulphate; potassium iodide; sodium selenite.

柠檬酸钠；碳酸钙；氢氧化钙；碳酸氢钾；碳酸镁；硫酸亚铁；硫酸锌；硫酸铜；硫酸锰；碘化钾；亚硒酸钠。

All this to say that I'm glad filmmaking hasn't become completely ironic. I can enjoy an ironic film as much as the next person, but they usually involve a message of some sort. One that's delivered in a smirkingly clever way that requires little in the way of talent.

所有这些都是说，我很高兴电影制作没有变成完全讽刺艺术，我可以和下一个人一样享受讽刺电影的乐趣，虽然他们经常会被划归到一定级别，技术方面不需要很高的才能。