The Sample Average Approximation Method for the Stochastic Variational Inequality Problem 一类随机变分不等式的抽样平均近似方法
In the process of estimating the regression parameters with linear programming ( LP) method, we give a principle of evaluating the fitness of the model, using the sample average of the closeness. 在使用线性规划LP方法进行模糊回归系数估计时,根据模糊集合的择近原则,给出了利用样本平均贴近度评价模型拟合效果的一个准则。
Sampling distribution of sample mean average value of a probability distribute 样本平均值的抽样分布
In this paper, the author proves that sample average is both the non-deviation estimation and consistent estimation of overall mean value. 本文证明了在不放回抽样条件下,样本平均数不仅是总体均值的无偏估计,而且还是相合估计。
Smooth Sample Average Approximation Method for Nonsmooth Stochastic Programming with Constraints 求解带约束随机规划问题的光滑化样本均值逼近方法
Based on examples, introduces significance of difference test method between sample average and ensemble average in cases of totality submission normal distribution ( variance known of unknown big, small sample) or totality non-normal distribution in education experiment; 结合实例,介绍了教育实验中总体服从正态分布(方差已知或未知,大、小样本)或总体非正态几种情形下样本平均数与总体平均数间差异显著性的检验方法;
The measurement accuracy of differential propagation phase shift Φ DP is calculated with various sample pairs M, range average intervals and spectrum widths σ V by using theoretical formula. Then, the effect of those factors on the measurement errors of Φ DP is analyzed. 本文从理论公式出发,计算和分析了不同方位平均、距离平均、不同谱宽σV等因素对差传播相移ΦDP测量精度的影响。
This paper is to research the simple way of datum-changing sample average and variance. 本文是在对样本求完其均值和方差后,数据又有所变动后的样本均值和样本方差的简易求法加以研究。
A computer algorithm on sample average value and st and ard deviation 一种样本均值和标准差值的电算化算法
According to the data of sample, the time weighted average concentration ( TWA) of each sampling spot were calculated. 根据测定的数值计算出每个测尘点的时间加权平均浓度(TWA)。
The sample average color difference is 1. 9. 样片的平均色差为1.9。
The sample plot in which average tree height, crown width and height diameter ratio all are bigger has sustained more damages, capacity of anti wind of this sample plot is weaker. 林木平均树高、冠幅和高径比大的标准地受破坏重,抗风能力差。
This paper deals with the computer algorithm of sample average value and standard deviation based on the method of relarive frequency distribution analysis, which has a present importance for the prediction of fish and prawn farming. 用频率分组分析的方法研究了样本均值和标准差值的电算化算法,对鱼、虾情的预报有一定现实意义。
These indirect samples have some statistical relationship with each other, but when calculating sample variance and average variance, the variance formula of random samples are used, so a wrong result is deduced. 这样的间接样本是统计相关的,可是上述教材在计算样本方差和样本均值的方差时,又用了随机样本的方差公式,所以结果是错误的。
In sample approximation approach, the expected objective function of the two-stage stochastic problem is approximated by a sample average estimate derived from a random sample taken from the historical database. 基于该方法,两阶段随机规划问题的期望目标函数值通过对该区间的历史数据平均值近似估计得到。
In addition, we account for real-world trading constraints, such as transaction costs, cardinality constraint etc. and so the chance-constrained mean semi-absolute deviation portfolio model with market frictions is set up and is solved by sample average approximate method. 最后,我们考虑股票市场的实际交易约束(如交易费用、基数约束等),构建具有市场摩擦的机会约束下的均值一半绝对离差投资组合模型,并利用SAA方法对模型进行求解。
According to the minimum energy from the sample of average wave-making energy for each design of bulbous bow-lines, which is to be objective function in this computation, the geometric parameters for optimization lines of bulbous bow can be determined. 以兴波平均能量最小为目标函数,确定首部型线的最优设计几何参数。
The content of fat, protein and organic acid in the dried persimmon icing are relatively low and the contents in dried persimmon icing sample are relatively average. 柿霜中都含有脂肪、蛋白质和有机酸,含量都比较低且比较平均。
Q-switched KTP/ Nd: YAG laser system has been developed, and the sample machine accomplished. Average power 80W and peak power 300W laser output were obtained. 本文进行了Q开关KTP/Nd:YAG激光系统的实验研究,获得了平均功率80W,峰值功率300W的激光输出,并完成了产品制造。
With the reasonable supposition, we combined and simplified a combination c-d production function model. It estimated sample scale efficiency on average, and proved the rationality of the model with statistical method. 在合理的假设基础上构建并简化了组合C-D生产函数模型,用于估计样本平均的规模效率情况,同时运用统计检验方法检证模型的合理性。
An efficient sample average approximation method is proposed to choose representative samples from the huge number of randomly generated segment running times. 因此,我们提出样本平均近似法来从大量随意产生的区间运行时分中选择有代表性的案例,以模拟其不确定性规律。
However, in Chapter V there are four sample banks in the average maturity of assets and liabilities of the larger difference between the average maturity date, assets, liabilities underscores the maturity mismatch. 但是,论文第五章在长时间窗口下得出相反的结论。四家样本银行的资产平均到期日与负债平均到期日相差较大,资产、负债期限错配情况突出。
We verified the accuracy of this model by simulating the eutrophication process in the target parameters with Yuanmingyuan actual water sample. The average relative error is 10.3%, so the model is basically reasonable. 利用圆明园实际水样的模拟富营养化过程中的指标参数来验证此模型的准确度,其平均相对误差为10.3%,可认为此模型基本合理。
Moreover, an appropriate sample numbers so as to calculate the sample average and baseline LQI value of good link quality had been deduced, which will contribute a lot to the relating LQI researches. 同时通过试验推导出计算LQI平均值最合适的样本数和一条好的无线链路的基准LQI值,给LQI的相关研究提供了很有价值的结论。