小概率事件

研究结果表明，在研究时段内，Synthesis法前兆群体异常占时率为0158，为小概率事件。

The results show that during the study period , the time to taking ratio of synthesis precursory group is 0.158 , which is a small probability event .

结果表明，广西冬季暴雨天气事件是一种小概率事件；

The results show that winter rainstorm is a small probability event .

将自适应重要抽样（AIS）法应用于不确定控制系统的概率鲁棒性分析问题，克服了标准MonteCarlo仿真（MCS）方法不能有效解决小概率事件的困难。

Adaptive importance sampling ( AIS ) method is applied to probabilistic robustness analysis problem of uncertain control systems , in order to overcome the difficulty that the standard Monte Carlo simulation ( MCS ) method cannot efficiently deal with rare events .

结果显示，能够准确地预报夏天是否出现持续高温天气≥6d，从而有效地提高长期天气、特别是小概率事件的预测能力。

The results show that durative high temperature weather can be predicted precisely by using the method . Accordingly , the veracity of the long-range forecast , especially for low probability event , is improved .

文中结合地震发生是个小概率事件这一特点，运用MYCIN模型推得了估计这一信度的实用公式，同时还对所遇到的其它几个不精确推理问题进行了论述。

A practical formula for estimating this certainty factor is derived with MYCIN model based on the characteristics that earthquake occurrence is an event with small probability , and some other inexact inference problems are also discussed .

根据状态检修实时数据推算出设备当前故障率，将小概率事件近似原则和事件树分析法应用于电力系统的N-k故障研究中，建立了N-k故障概率的分析模型。

On the basis of real-time data of CBM , the current failure probability of equipments is calculated . Applying rare event approximation and event tree analysis technique to the study of N-k contingency , the failure probability model for N-k contingency is built .

实验证明，采用重要抽样的仿真方法可以得到大差分群时延（DGD）值的小概率事件，并且系统配置比用蒙特-卡洛的仿真方法简单得多。

In Polarization Mode Dispersion ( PMD ) simulation , are analyzed . The experimental results show that low probability events of large Differential Group Delay ( DGD ) can be resulted by importance sampling simulation and the system configuration is much simpler than by the standard Monte-Carlo method .

而即使对小概率事件的认识准确无误，也不真正管用。

And even accurate knowledge of small probabilities cannot really help .

从一则谚语例谈小概率事件

Talking About a Little Probability Event from a Proverb

导出了一些与该过程的逗留时有关的小概率事件的界。

We derive bounds for the probabilities related to sojourn times of this process .

小概率事件在日常生活中有着很广泛的应用。

The small probability event has a wide range of applications in daily life .

小概率事件的检验方法：交并结合消空法

A Test Method of Little Probability Event : Decreasing FAR Method With Intersection and Union

实验旨在利用人们过高估计小概率事件的倾向。

The idea is to make use of people 's tendency to overestimate small probabilities .

对于小概率事件，子集模拟方法的计算效率比蒙特卡洛模拟的计算效率高很多。

For small probability problems , the efficiency of Subset Simulation is highter than Monte Carlo Simulation .

小概率事件发生的情况越多，对文本分类的结果影响也就越大。

The more the small probability events happen , the more the impact to text categorization results .

南海台风西行北翘是小概率事件，预报具有一定的难度。

It is difficult to predict the track of typhoon moving westward and turning northward in the South China Sea .

由于是小概率事件且样本量小，无法对两组之间的差别进行统计学描述。

Because it is a small probability event and the small sample size , no difference between the two groups is statistically described .

重大火灾的发生是小概率事件，其历史数据属于小样本统计数据。

The serious and extremely serious fires are events with low probabilities , and the statistics data of them are of small sample .

这张图片昨天刚被发上来，仅仅一天时间点击量就超过了3132000次，人们对这个小概率事件开了很多玩笑。

The image , which has been viewed 3132000 times since it was posted yesterday , saw plenty of jokes on the unusual occurrence .

提高体育统计中统计推断应用水平的关键&正确认识小概率事件原则

The Key to Improve the Applied of Statistical Inference in physical Education Statistics to have a correct understanding , the principle of minor probability accident

小概率事件原理是概率论中具有实际应用意义的基本理论。

The little probability event principle is an important theorem in probability which has practical and applicable meaning and is often used in daily life .

基于统计的方法是一种非确定性的定量分析方法，这种定量分析是基于概率的，因此必然会掩盖小概率事件的发生。

The method based on statistics is an undetermined quantitative analysis . Due to basing on probability , the events with lowest probability are hidden .

以航空运营系统的组成和结构为出发点，揭示了航空系统是一个复杂系统，空难是复杂系统中的小概率事件这一物理本质；

The characteristic and structure of the aviation system is analyzed to illuminate that an air accident is in nature an infinitesimal probability event of a complex system .

彭明盛和罗曼提的生日在同一天都是7月29日，这可是365分之1的小概率事件若是考虑闰年因素，那还要小一些，莫非这是什么征兆？

In a1-out-of-365 chance , or less considering Leap Year , Palmisano and Rometty share the same birthday , July29th ; is that an omen of some kind ?

极值统计就是研究这种小概率事件风险的模型技术，它的意义在于对极端风险事件的预测和评估。

Extreme value theory is the model technology to study such events risk with small probability . The theory can predict and assess the risk of extreme events .

对此巴塞尔委员会在2004年《新巴塞尔协议》中提出了必须对信用风险执行压力测试即对小概率事件发生时的评估。

So in 2004 , the Basel Committee proposes that stress tests must be used in management of credit risk in the " New Basel Capital Accord " .

将未来大震看作小概率事件是对古登堡震级与频次关系的误解；

It also considered there is a misunderstanding for the relation between Gutenberg magnitude and grequency , as the method took the future large earthquakes as a small probability event .

在质量管理中，假设检验具有以小概率事件来推断当工艺方法、原材料、过程参数改变时是否引起总体发生变化的常用方法。

With regard to quality management , hypothesis testing is adopted to deduce whether the overall changes or not while production processes , incoming materials or process parameters are varied .

同时还对本文方法的一些特性（优化侧重、收敛性与小概率事件的关系等）进行了实验和分析。

Moreover , some related topics of the algorithm are given , such as the focus on optimization , the relationship between the convergence and the events happened with small probability .

应用该方法可以大大提高小概率事件的抽样效率，文中给出一组仿真结果对照。

Using the way , the sampling efficiency for small-probability events can be improved considerably , as can be seen from the contrasts shown in a group of results of simulation .