线性模型中的最大似然估计的通有稳定性

本证明了线性模型中回归系数的最大似然估计关于随机误差的通有稳定性。     

右截尾数据处理方法简析

电子元器件可靠性寿命分析中,右截尾类型的数据居多,针对此类数据的分析方法也很多。其中,线性回归和极大似然估计应用较广。在此,运用实例对这两种方法进行了对比分析,指出了使用线性回归法进行参数估计的缺点,说明极大似然估计法是比线性回归法更优的统计模型。     

极大似然估计及其应用

讨论了极大似然估计原理及求法,说明了极大似然估计在不同分布和参数空间的应用,阐述了生命表中在单风险非完整样本数据环境中表格生存模型的极大似然估计方法．     

广义线性模型极大似然估计弱相合性的数值模拟

广义线性模型是经典线性模型的自然推广,它是一类应用广泛的统计模型.选择Probit模型,利用matlab编程,通过数值模拟的方法验证了广义线性模型的极大似然估计的弱相合性.     

双边定数截尾下线性指数分布的参数估计

在双边定数截尾样本下讨论了线性指数分布中未知参数的极大似然估计和Bayes估计.通过Newton-Raphson迭代法得到了参数的极大似然估计,并证明了极大似然估计的唯一存在性.选取无信息先验分布与共轭先验分布,分别在对称损失函数和非对称损失函数下,通过Tierney-Kadane近似讨论参数的Bayes近似估计.利用MatlabR200b模拟了未知参数的极大似然估计的均方误差以及Bayes估计的均方误差,结果表明：不同样本量不同截尾方案下,选取Gamma先验分布并在平方损失函数下,未知参数的Bayes估计的均方误差是最小的.     

关于半参数广义线性模型的惩罚似然估计

本文对文[1]给出的一类半参数广义线性模型(semi-paramctric GLM),利用惩罚似然方法得到参数和非参数函数的惩罚似然估计。同时指出极小惩罚似然估计与惩罚加权最小=乘估计等价。     

分块混合线性模型的参数估计

给出含有两个方差分量的分块混合线性模型,在一定条件下讨论给出三种模型的固定效应之间的关系,以及方差分量σ21和σ2的极大似然估计。     

极大似然估计的性质探讨

文章首先介绍了极大似然估计,然后综述了极大似然估计的优良性质,同时探讨了在应用极大似然估计时所应注意的问题。     

线性指数分布参数的Bayes估计

对给定容量为n的线性指数分布样本X1,X2,…,Xn,在Linex损失函数下,利用共轭先验分布讨论线性指数分布参数θ的Bayes估计,多层Bayes估计,E-Bayes估计和极大似然估计.     

基于最大L_q似然估计的广义非线性模型的统计诊断(英文)

为了检测数据是否符合给定的模型,需要对数据进行统计诊断.研究了基于最大Lq似然估计的广义非线性模型的统计诊断问题.利用3个统计诊断量来检验数据中是否都存在异常点.模拟结果显示,当样本容量较小时,使用最大Lq似然估计方法得到的诊断统计量的结果要比使用极大似然估计(MLE)方法得到的结果大;随着样本容量的增加,它们之间的区别逐渐减小.因此,使用最大Lq似然估计方法比用MLE方法更容易找到数据中的异常点.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.