查询词典 sufficient statistic

At present the classic least square method, which is only adaptable to the data series of normal distribution, is usually adopted in statistic calculation. However, the actual series are usually pollutional distribution instead of normal distribution.

保证监测资料的可靠性是建立监控模型的基础工作，目前的统计计算一般采用经典的最小二乘法，该方法只适合于误差服从正态分布的数据序列。

Statistic analysis on IR image characteristics shows that IR target has relatively more and larger regions which are of same quality, mainly expressed by smooth images and by that the energy distribution is concentrated on low frequency band in L〓 linear normed space, while large quantity of background regions show as texture images and their energy in L〓 space is concentrated on high frequency band. Based on this difference, the IR target segmentation method on the basis wavelet transformation is proposed.

通过对红外图像特征的统计分析证明，红外目标含有较多较大的同质区，主要表现为平滑图像，在L〓线性赋范空间的能量分布集中在低频，而大量的背景区域表现为纹理图像，在L〓空间中能量集中在高频部分，根据这一差别，提出了一种基于小波变换的红外目标分割方法。

Xie-Beni index decreases with the number of partitions increasing. It is difficult to choose the optimal partition of data when the number of clusters is large. From the point of view of the compactness and the separation of clustering, a novel clustering validity function is proposed, which is based on the improved Huber Г statistic combined with the separation of clustering.

针对此问题，分别考察改进的Hubert Г统计量和聚类分离度，导出一个新的基于数据几何结构的聚类有效性函数，使得它有惟一的最大值，函数值随聚类个数增大而递减的趋势并不影响最优聚类个数的判定。

Newest statistic number makes clear, complete province is not state ownership economy to organize many 710 thousand, from personnel of course of study 240 more than person, value of output of economy of blame state ownership already occupied the 31 ％ that save gross domestic product completely.

最新统计数字表明，全省非公有制经济组织71万多户，从业人员240余万人，非公有制经济产值已占到全省国内生产总值的31％。

According to concerning sectional statistic, the achievement of off-the-peg agriculture science and technology of 70 ％ applies 60 ～ of our country hard promotion, the oneself quality of the farmer is low it is main reason.

据有关部门统计，我国60～70％的现成农业科技成果难以应用推广，农民的自身素质低是重要原因。

In charge of statistic on production process and report

负责组织对生产过程数据的统计并上报工作

Cohen's Kappa statistic and the area under the Receiver Operating Characteristic curve were used to evaluate the performance of the models.

并结合全球气候模式预估的未来情景对未来气候条件下的分布进行了预估。

Methods Polymerase chain reaction and restriction fragment length polymorphism was used to identify mdm2 genotypes. The Pearson Chi square test and Woolf statistic method were used to analyze the relative risk and 95% confidence interval in order to find the genetic association between polymorphism of mdm2 gene and symptoms and pathological types of NSCLC.

采用聚合酶链反应和限制性内切酶片段长度多态性方法检测88例NSCLC患者的mdm2基因型，并通过Pearson卡方检验及Woolf方法计算相对风险度及95%可信区间（95%CI），验证mdm2基因多态性与各临床症状及病理类型之间的关联性。

The study on the attenuation law with statistic analysis and dimension analysis reveals that the attenuation index, closely relative to the properties of soil mass, can be expressed as a third order polynomial of vibrating frequency f.

用统计分析和量纲分析的方法研究了强夯振动的衰减规律，发现强夯振动衰减指数与场地岩土体的性质密切相关，可表示为振动频率的三次多项式的形式，为强夯振动的频域分析以及利用强夯振动研究岩土体的性质奠定了基础。

The influence of some factors on clinkering range is discussed and put in the order by means of the statistic method.

特别是运用二次回归正交试验法建立了能够计算和设计某一物料的烧成范围所必需的二次回归方程。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。