mathematical expectation
英 [ˌmæθəˈmætɪkl ˌekspekˈteɪʃn]
美 [ˌmæθəˈmætɪkl ˌekspekˈteɪʃn]
计算寿命；统计寿命；数学期望
双语例句
- The economist John Maynard Keynes argued that market behavior could not be rational, or subject to improvement, since our existing knowledge did not provide a sufficient basis for a calculated mathematical expectation of investment returns.
经济学家约翰梅纳德凯恩斯曾经说过，市场的行为不可能是理性的，也不可能改进，因为我们现有的知识不能为经过精确计算而得出的投资收益预期提供充分的依据。 - On direct methods to the mathematical expectation and variance in the matching problem
配对问题中的数学期望与方差的直接求法 - A double forecasting model is proposed by using conditional mathematical expectation, based on probability distribution of port cargo throughput.
在得出港口货物吞吐量概率分布的基础上，利用条件数学期望提出了港口货物吞吐量的双层预测模型。 - On the Mathematical Expectation of the Application of Scattered Random Variable
离散型随机变量的数学期望应用举例 - The traditional mathematical expectation ( i.e.the expectation about additive measure) takes an important role in risk pricing.
传统的数学期望（即关于可加测度的数学期望）在风险定价和效用理论中起者重要的作用。 - Based on the AID ( Automatic Interaction Detection), a forecast method and the error square sum of forecast are given. Then the mathematical expectation of the pH value is estimated.
利用AID（AutomaticInteractionDetection）预测法，进行了编程计算，得到了预测规则，并给出了预测的偏差平方和及降水pH值的数学期望估计值； - And the distribution function, distribution density and mathematical expectation of fuzzy random variable are introduced by the authors.
引入了模糊随机变量的分布函数、分布密度和数学期望； - Study the expansion in series for the mathematical expectation and the variance of the coefficient of variation in the condition of the truncated normal distribution; finally, indicate how to calculate the coefficient of variation when observations are made in groups.
又在截尾正态分布的条件下，研究了变异系数的数学期望与方差的级数展式，最后指明了分组观测时变异系数的计算方法。 - This paper explores the application of mathematical expectation of a discrete random variable in civil dispute, disease survey and profit.
本文通过民事纠纷、疾病普查和利润的例子探讨离散型随机变量的数学期望在法律、医学和经济等问题的应用。 - The Mathematical Expectation Method for Quality Design
质量设计的数学期望法 - A calculation for random variable mathematical expectation
一个随机变量数学期望的计算 - The mathematical expectation method for quality design described in this paper is one of processing problems for quality design which is based on the quality loss function and expected value decision method.
本文提出的质量设计的数学期望法，是运用质量损失函数和期望值决策法，处理一类质量设计问题。 - Mathematical expectation and variance of random variable with fuzzy probability
模糊概率随机变量的数学期望和方差 - This paper discusses the probability of the different butterfly investors 'profiting and mathematical expectation of its profit function.
本文探讨了不同蝶状价差投资者的获益概率及其平均损益。 - Mathematical expectation is important concept of probability theory, to apply mathematic expectation discuss economic problems, and obtain useful conclusions.
数学期望是概率论的一个重要概念，应用数学期望讨论某些经济问题，从而得到一些有意义的结论。 - In this paper, we consider both the mathematical expectation and variance for the time to failure of some systems and design a system with ideal reliability.
本文研究系统寿命的均值和方差，并设计出较为理想的可靠性系统。 - The paper discusses that mathematical expectation and variance of all primitive body obey the regular of ( 0,1).
讨论了一切母体的数学期望和方差服从0,1规律； - Prove that the mathematical expectation of the coefficient of variation inexists;
证明了变异系数的数学期望是不存在的； - This paper designed that objective function is taken at the biggest mathematical expectation value of investment profit. The optimization control of the state equation is taken at the investment and quantity discount.
设计了以实物期权投资者利润数学期望最大为目标函数，以投资和数量折扣作为状态方程的最优控制问题。 - Some Applications Related to Mathematical Expectation in Economic Problems
数学期望在经济问题中的应用 - Some special useful properties are obtained by the definition of maximal mathematical expectation or via g-expectation.
通过g-期望的性质或最大数学期望的定义得到了最大数学期望的某些重要性质。 - Suppose the mathematical expectation of image signal is zero, the basic properties of the correlator output are given.
假定图象信号的数学期望为零，证明了相关器输出的基本性质。 - The basic theory of fuzzy numbers is applied to give the definition of mathematical expectation of fuzzy random variables and variance of fuzzy random variables, and to discuss properties of mathematical expectation of fuzzy random variables and variance of fuzzy random variables.
应用模糊数理论，给出了模糊随机变量的数学期望和模糊随机变量的方差的定义，并研究讨论了模糊随机变量的数学期望和模糊随机变量的方差的性质。 - Fuzziness and randomness exist extensively in uncertain phenomena during the risk analysis. In this paper the authors combine fuzziness and randomness by using fuzzy mathematical expectation and give the definition of fuzzy random risk.
风险分析中的不确定现象存在大量的模糊性和随机性，利用模糊学期望将模糊性与随机性相结合，给出了模糊随机风险的定义，进而提出了一种风险评价的新方法。 - Then the independence of random variables with fuzzy probability ( RVFP) was introduced, with the characters of mathematical expectation of discrete RVFP proved.
然后引入了模糊概率随机变量的独立性，给出了离散型模糊概率随机变量的数学期望性质的证明。 - Using the partial least square regression theory, the partial least square regression equation the error square sum of forecast are given. Then the mathematical expectation of the pH value is estimated.
利用偏最小二乘回归理论，对酸雨数据进行了编程计算，得到了偏最小二乘回归方程，并计算了偏最小二乘回归模型的预测残差平方和降水pH值的数学期望估计值。 - The results, which based on a mathematical expectation of the probability statistics, may be not the optimal results and far away from the practical applications.
这种转化方法求出的结果实际上是基于概率统计的一个数学期望值，并不一定是最优的结果，在实际应用时可能和最优决策相去甚远。 - As a basic tool researching random phenomenon, the classic mathematical expectation theory, by and large, has been perfect.
作为研究随机现象的一个基本工具，经典数学期望理论已基本成熟和完善。 - In Stochastic Model Predictive Control, chance constraints are presented and the objective function is an mathematical expectation.
在随机预测控制中，约束是机会约束，目标函数是数学期望，滚动优化求解的是随机优化问题。 - Controller design method with random time delay is discussed in this paper. It is not necessary to update large amount of data by using mathematical expectation to predict time delay.
本文首先讨论了具有不确定时滞的系统控制器的设计方法，通过利用时滞的数学期望避免了控制器需要更新大量数据的问题。