参数估计

First, the concept emergence probability is assumed to be a random variable with a priori Beta distribution. Second, its priori parameters are designated by the distance-based similarity algorithm, calculated by Bayesian Estimation.

该算法首先假定概念出现概率是符合Beta分布的随机变量，然后基于语义距离的相似度算法计算先验参数，并根据统计样本计算该先验分布下基于最小风险的贝叶斯估计后验参数。

Also,the effects of estimation were dependent on structure of population size,accuracy of estimates would be decreased when number of sires was too few or data contained small number of animals.

同时，群体含量和结构能影响各种方法的估计效果，群体含量较小或资料来源的公畜数太少，将导致遗传参数的估计误差增大，准确性降低。

While by introducing the spherical simplex UT, a better-behaved sigma point selection strategy, the number of sigma points required to the same transformation accuracy can be dramatically reduced, and accordingly, the computation burden can be avoided.

在有陀螺模式下，设计了基于误差修正罗德里格参数的SUKF姿态估计算法，在计算过程中同时能够保证四元数始终归一化。在无陀螺模式，基于MRPs的姿态表示和卫星刚体动力学方程，实现了SUKF姿态估计算法。

Based on the ultrasound field solution, temperature in tissues were estimated. Temperature elevation of some points were given in the figures. The influence of direction ratio to temperature distribution was discussed. It provided the ref...

在求解声场的基础上，对该类换能器的声场在组织中的温度分布进行估计，给出了组织内温度随时间变化的曲线，分析了方向比对焦区温度分布的影响，为该类换能器的参数选择和组织中的温度分布估计提供了参考

Then, a threshold is set to detect control surface fault.

为了估计舵面损伤程度，文中对状态与参数联合估计的卡尔曼滤波方法也进行了研究。

In this paper, the M-estimation method is used to obtain robust parameter estimation of DE-model in long-tailed clutter.

针对这种情况，该文利用M估计方法来实现对长拖尾杂波下DE模型参数的稳健估计。

It is better for enhancing clock synchronization precision. And research one-way delay communication models, gives the analysis of real cases.

本文对网络时钟同步单向通讯模型进行了研究，采用数理统计估计法对网络延迟参数作了精确估计，并给出实例分析。

The existence and convergence theorem of Newton method and quasi Newton method solving nonlinear equation with parameters F = 0 is obtained under point estimates and weak conditions.

在点估计条件下给出用Newton法及拟Newton法求解带参数非线性方程F = 0解的存在性定理和收敛性定理，以及误差估计。

The thesis tends to investigate the establishment of the insurance cycle score and business cycle of the premium of new business. We utilize six kinds of different insurance of new business to be our investigate object, that including ordinary life insurance, group life insurance, individual health insurance, group health insurance, personal accident insurance and group accident insurance. Besides observing fluctuate of the firsthand information, we used the maximum likelihood estimation to estimate the unknown parameter of Markov switching models. Try to cognizance the peak and the trough of business cycle.

本研究在探讨保险新契约之保费的景气循环状况与景气分数的制定，其中我们利用六种不同的保险新契约保费当研究对象，包括个人人寿保险保费、团体人寿保险保费、个人健康保险保费、团体健康保险保费、个人伤害保险保费和团体伤害保险保费，除了观察原始资料的波动外，亦采用最大概似估计法来估计马可夫转换模型的未知参数，尝试著去认定景气循环的高峰与谷底。

Simply assuming that under different conditions, gene expression levels have three regulation states, i.e., up-regulation, down-regulation and non-regulation states, we can probabilistically establish a model of gene regulation states to compute gene regulation probabilities under different conditions.

简单假设在两种不同的实验条件下被调控的基因表达水平表现为三种调控状态，即上调控状态、下调控状态和非显著调控状态，我们使用概率统计方法对基因调控状态进行建模。在该模型的基础上，我们应用三种参数概率估计方法对基因调控概率进行估计。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新