查询词典 stochastic approximation

In this paper,we will analyze volatility of stock market in our country through heavy-tailed stochastic volatility model and leverage effect stochastic volatility model.

为克服上述缺陷，本文利用厚尾SV模型和杠杆SV模型对我国股市的波动性进行分析研究。

This paper research on the effect of investment with reserve for insurance price by theory of backward stochastic differential equation.Modeling the investment with backward stochastic differential equation and the resultts got.

本文利用倒向随机微分方程的理论，在考虑保险公司提计准备金的背景下研究投资对于保险价格的影响，建立了再保险投资定价的正倒向微分随机方程的模型，并给出了保险价格的显性解。

The maximum entropy principle is utilized to calculate the probability of stochastic rays undergoing k reflections.Finally,the applications of stochastic rays are investigated: the...

最后介绍使用随机射线建模超宽带室内信道的多径传播轨，在此基础上可以得到信道特性建模的基本随机变量，以及无线电波传播的概率模型等应用。

Monte Carlo is a method that approximately solves mathematic or physical problems by statistical sampling theory. When comes to Bayesian classification, it firstly gets the conditional probability distribution of the unlabelled classes based on the known prior probability. Then, it uses some kind of sampler to get the stochastic data that satisfy the distribution as noted just before one by one. At last, it can obtain the posterior probability distibution of each unlabelled classes by analysing these stochastic data.

蒙特卡罗是一种采用统计抽样理论近似求解数学或物理问题的方法，它在用于解决贝叶斯分类时，首先根据已知的先验概率获得各个类标号未知类的条件概率分布，然后利用某种抽样器，分别得到满足这些条件分布的随机数据，最后统计这些随机数据，就可以得到各个类标号未知类的后验概率分布。

According to two probabilities, i.e., the forced outage rate and the outbidding rate of generating sets and based on Monte-Carlo stochastic simulation model, a stochastic production cost model for pumped storage power station is put forward.

文章应用蒙特卡罗随机模拟理论提出了抽水蓄能电站的生产成本随机模型，该成本模型依据两个概率：机组的强迫停机率和机组市场竞标的落标率。

The approximate stochastic solution of the plane wave and the propagation behaviors are obtained by means of stochastic functional approach.

假设二维随机介质具有各向同性窄带高斯谱，运用随机泛函理论给出了二维介质中随机平面驻波的解析近似解及其幅度和相位的定量统计特性。

Then it is demonstrated that the other methods are all the approximation of the stochastic method.

论证了其它方法都是随机过程方法的近似。

According to the study of the stochastic approximation theory, a new optimization method of yield is given.

在对随机逼近理论进行研究的基础上，提出了一种新的合格率优化算法。

Using the stochastic approximation theory, a rigorous analysis of the convergence properties of the algorithm was presented.

然后，采用随机逼近理论，严格分析了算法的收敛性。

Secondly, a asymptotic approximation formula of structurefailure probability is presented in generalized stochastic space with correlatedrandom variables by the asymptotic method of Laplace integral, by which the failureprobability and risk analysis on the chamfered vertical breakwater have been done.

其次，利用Laplace型积分的渐近计算方法，还推导出了广义随机空间相关荷载变量作用下结构失效概率的一个新的渐近计算公式，并依此算法对削角直立堤进行失效概率的计算以及风险评估。

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。