参数估计

The convergence of them is proved, i.e if the parameters estimation is consistent, then self-tuning fusion estimator will converge to the optimal fusion estimator with known model parameters and noise statistics, and the accuracy of self-tuning fusion estimator is higher than that of each local self-tuning estimator.

证明了它们的收敛性，即若ARMA新息模型的参数估计是一致的，则自校正信息融合Wiener估值器将收敛于当模型参数和噪声方差己知时的最优信息融合Wiener估值器，且自校正信息融合Wiener估值器的精度高于每个局部自校正Wiener估值器。

In this model of Tu Men River quality the functional structures of the deoxygenation coefficient k1, reaeration coefficient k2 and BOD sedimentation-resuspension coefficient k3 are established and tbe parameters determined by a regression technique to suit the characteristics of a river in the mountain area of North-Eastern China.

表达式中的参数通过系统识别与参数估计方法确定，因此能较好地反映河流的地理环境特点。特别是κ_3的表达式，它以流量为自变量，用一个单一的解析函数同时描述了江中的沉淀与再悬浮现象，具有独创性。

The objective of this paper is to estimate the parameters of generalized exponential family ARMA models and construct the confidence intervals of the parameters. In this paper we divided the problem into continuous type situation and discrete type situation.

本文针对广义指数族ARMA模型，分为连续型指数族和离散型指数族两种情况讨论模型的参数估计，并运用不同的Bootstrap方法构造参数的置信区间和置信带。

Further, the maximum likelihood function is described as an unitary function of shape parameter. It is easy to be solved with the dichotomy.

但是三参数Weibul1 分布的参数估计比较复杂，人们围绕这一问题做了许多研究，提出了许多方法。

Reduced SQP based on orthonormal bases, orthogonal bases and coordinate bases are studied and compared. With the correction item introduced, the null-space move is adjusted and the reduced SQP based on coordinate bases decomposition is improved.●The key problem of steady-state data processing for RTOPT is studied. A new algorithm of simultaneous strategies for data reconciliation and gross error detection is proposed. Here the objective function that is constructed using maximum likelihood principle and joint distribution function is minimized. Efficient algorithm is developed which exploited the nonlinear lease-square structure of this objective function.

仿真结果表明了算法的有效性；●深入研究了在线优化中的一个关键问题——稳态数据处理问题，用基于组合概率分布的目标函数联立求解粗劣误差检测和数据调和问题；以精馏塔在线优化的数据处理和模型修正为例，提出一种根据模型方程对参数的依赖性进行过程模型分解的分层策略，可以将数据调和和参数估计统一在数据处理的大框架中，为进一步的过程性能分析、操作状况评价以及在线优化提供可靠的基准，具有非常重要的工程应用价值；●将优化命题的形式扩展到更通用的形式。

For the lack of return data in the first stage, the GM(1,1) model improving the generation method of neighborhood system is adopted, and forecasting is carried out by only using a few data. When the data amount reaches 50, the hidden quantitative relationship between sale quantity and return quantity is established by performing the transfer function-noise model. Its parameters are determined through model identification, parameters estimation and diagnostic checking. Then, forecasting return is accomplished.

回收初期数据缺乏，采用改进邻域系生成方法的GM(1，1)模型，实现了少量数据情况下的预测；回收数据累积到50个后，利用传递函数噪声模型构建了回收量和前期销售量之间的内在数量关系式，然后通过模型识别、参数估计、诊断检验确定了关系式的具体参数，进而实现了回收预测。

Keywords: Interval-censored data;nonparametric estimation;semiparametric model;nonlinear regression

中文关键词：区间删失数据；非参数估计；半参数模型；非线性回归

In order to locate the point target found timely and satisfy the need to obtain information and respond quickly, this paper proposes an algorithm for the latitude and longitude of point targets so that given the known parameters, the latitude and longitude of a point target can be calculated on the SAR image at the earliest possible time. This paper also offers parametric estimation of and experimental research on the precision of the algorithm.

为了及时对发现的点目标进行定位，适用于未来战争战场信息获取和快速反应的要求，本文针对SAR在正侧视和小斜视情况下的成像算法提出了机载SAR成像场景中的点目标经纬度的计算方法，使得我们能第一时间在SAR图像上根据所知参数计算出所需点目标的经纬度，并就该方法的精确性进行参数估计和试验研究，验证了其有效性。

Ding J%Song D%Yang R Further research on application of probability weighted moments in estimating the parameters of the Pearson type three distribution Water Resources Research , 1989,null

马秀峰 计算水文频率参数的权函数法水文， 1984，(3)刘光文皮尔逊Ⅲ型分布参数估计水文， 1990，4

In 1988, Song Dedun and Ding Jing further verified that the distributions whose inverse forms must be explicitly defined could by no means be a prerequisite for using the PWM method, and they applied PWM method successfully to the estimation of parameters in Pearson Type-Ill distribution (P-III distribution) although this sort of distribution nev...

由我国宋德敦、丁晶(1988年)将美国Greenwood等人(1979年)提出的概率权重矩法，应用于P-Ⅲ分布，取得较好效果。本文将PWM法应用于指数Γ分布的参数估计。统计试验结果和实例分析表明，PWM法用于指数Γ分布的参数估计时，具有较好的统计特性。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。