查询词典 probability density

The Laplace transformation functions of probability distribution density functions for the difference between the times,at which the jth and j-1th new type failures happened,were derived in the cases of with and without precondition.

分析了无条件、有条件两种情况，给出了第j个和第j-1个新类型故障发生时刻之差的概率分布密度的Laplace变换函数。

Firstly, we select features by using CHI distribution. Secondly, we cluster the selected features by using an improved method which based on density. In virtue of the sort distribution information, we reduce the number of features twice and the information lost few. Lastly, based on the sort of texts, we use the distributing of probability to express text with matrix. By using matrix norm, we realized the text categorization.

首先通过分布对特征项进行选择，然后使用一种改进的基于密度聚类方法对选择后的特征项进行聚类，借助类别分布信息，在尽量减少信息缺失的前提下先后两次对文本特征维数进行了压缩；在基于类别概率分布的模式下实现文本的矩阵表示，借助矩阵理论进行文本分类。

The algorithm of infrared dim and small target tracking based on probability hypothesis density filter is presented.

为解决这个问题，提出了基于概率假设密度滤波的红外弱小目标跟踪算法。

Aiming at complicated computing and difficulty of being realized when extending single sensor PHD filtering to the multi-sensor case by means of probability generating function, a multi-sensor multi-target sequential particle-PHD tracking algorithm is proposed based on the thought of sequential filtering for a centralized fusion system. The algorithm chooses the importance density function with regard to every sensor, and updates sample particle of every sensor layer by layer.

当采用概率母函数将单传感器PHD滤波推广到多传感器情形时，针对计算繁琐，难于实现的问题，本文基于集中式融合系统的有序滤波思想，提出多传感器、多目标有序粒子PHD跟踪算法，该算法通过选取与各传感器相关的重要性密度函数，层层更新各传感器的采样粒子，达到多传感器多目标有序PHD跟踪。

This then would increase the possibility/probability of bringing this into third-density occurrence.

这会增加这件事在第三密度发生的可能性/或然率。

Baysian model is combined with kernel density function to give a new detecting object method in probability space.

实验证明，利用该方法可以得到更好的检测结果。

The purpose of the research is to price the GARCH options without risk neutral assumption and the specification of state price density per unit probability. The FHS with calibration is employed to estimate risk neutral parameters.

本研究目的系探讨在非常态与无特定分配设定下的GARCH选择权定价，透过状态价格机率分配及其校正，即可估计风险中立下的校正参数。

By simulation calculating,the influences on the TBM penetration ability are quantitatively discussed,such as TBM attacking density,defense weapon amount,fire unit interception probability and so on.

通过仿真计算，深入定量地探讨了 TBM的进入密度、防御武器数量和火力单元拦截概率等因素对 TBM突防能力的影响。

Considering the randomness of both elastic module and mass density of the structures, the element′s structural stiff and mass matrix have been built, the structure dynamic characteristics is analyzed based on probability, and the digit characteristics of natural frequency random variable is derived from the Rayleigh′s quotient.

利用随机因子法，建立了考虑结构弹性模量和质量密度同时具有随机性时结构的刚度矩阵和质量矩阵；从结构振动的瑞利商表达式出发，利用代数综合法推导出结构特征值随机变量数字特征的计算表达式。

The deep study of probability of density function of MN's sojourn time of the handoff area will give very efficacious guidance of the time to trigger L2-triggers. The results of simulation show that the method of triggering L2-triggers by using forecast of channel quality will get the ideal effect.

对MN在切换区域内的时间分布概率密度函数的深入研究，为触发L2T的时机选择提供了很好的指导作用，仿真结果表明我们提出的采用信道质量预测提前触发L2T的方案可以获得非常理想的结果。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。