参数估计

The parameters in mixtures are estimated by the generalized EM algorithms with low complexity and monotonic convergence.

在混合模型中的参数使用EM演算法来估计具有较低的复杂度和单调收敛的性质。

Production function is very important in the life, so choosing the reasonable mothed for estimationg parameters of production function is very necessary.

生产函数在生活中有着举足轻重的作用，合理地选择估计生产函数参数的方法尤为重要。

In this paper,a revised universal soil erosion e-quation was selected, the effects of errors of this neglection on it were tested by non-parametric hypothetical test method of Kolmogorov-Smirnov for a 22-year period within 21 catchments of the middle Huanghe River region,and the resul...

采用非参数假设检验方法，对年产沙模数估计方程中下垫面因素的时变影响作定性分析，结果表明，对于一般流域，如果没有人类活动或自然灾害破坏导致下垫面条件的突变，下垫面因素对产沙的影响可看作是时不变的。

Furthermore, the paper introduces the concept of the trip chain, to construct a female morning commuter trip chain choice behavior model with noncollection theories and methods, to analyze 10 factors that influence a female individual's choice of a trip chain from the source. Subsequently, model parameters are estimated, to calculate the incidents that can help to quantitatively understand the impact of each factor on a female's choice of the trip chain.

进一步地，引入了出行链的概念，利用非集计理论和方法，构建了女性早通勤出行链选择行为模型，从源头上分析影响女性个体出行链选择行为的10个重要因素；并利用模型估计所得的参数计算事件发生比，量化了各个影响因素对女性出行链选择行为的影响程度。

On the basis of a comparison between finding in mitral stenosis and those in normal subjects,the Doppler diagn- ostic criterion of mitral stenos...

本研究的目的是利用脉冲多普勒技术测量的血流速度参数诊断二尖瓣狭窄并估计其病变程度。

For the process of synthesizing of Phosphonic Acid Dimethyl, the significance of application of MSPC on it is discussed, the parameters and original data are deduced and estimated, and process monitoring and diagnostic simulation are given based on simplified model.

对于亚磷酸二甲酯生产过程，论述了对其进行多变量统计过程控制的意义，对该生产过程的物性参数和初始数据进行了推导和估计，并在经过简化的生产控制模型基础上进行了多变量统计过程监控和诊断仿真。

The idea of the model is that the existing model can not be used to the problem which is polycentric clearly. The polycentric distance model made the expansion model more general.

将单一中心区域的空间扩展模型扩充到多中心区域的情形，并给出了参数的估计方法。

Based on the statistic feature of block matching moving vector, the method calculates the basic translation vector between current frame and referenced frame through a revisable parameter, and adaptively chooses processing algorithm for image sources with different characteristics.

该方法从分析块匹配运动矢量统计特性出发，通过引入一个可预设置参数，计算当前帧与参考帧之间的基本平移矢量，并自适应地采取混合全局运动、局部运动估计的算法处理不同特征的源数据。

In the algorithm, we employ the Minimum De- scription Length criterion and the Estimation of Signal Parameters by Rotational Invariance Techniques method to acquire the initial pa- rameters of the multipath fading channel, and propose an inter-path interference cancellation delay locked loop to track the channel multipath time delays.

在该算法中，我们使用MDL和ESPRIT来估计信道的初始参数，并提出一种路径间干扰抵消的DLL来跟踪信道中各路径的时延。

The historical earthquakes and seismotectonic data of Beijing and surrounding areas are described based on which parameters of input excitations of the basement rocks have been evaluated.

文中研究了北京及其周围地区的历史地震和地震地质资料，并在此基础上估计了基岩运动的参数。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。