1) saddlepoint approximation
鞍点逼近
1.
Saddlepoint approximations can be given for saddlepoint approximations in many cases when the distribution of variable is known.
统计量分布的确定是统计推断的一个关键工作,在总体分布已知的条件下,鞍点逼近在很多场合可以给出统计量分布的良好近似。
2.
Method: The saddlepoint approximation and the transition relation between Weibull and exponential distribution are used in the paper.
方法利用鞍点逼近及威布尔分布与指数分布的转换关系。
3.
For exponential life data with varying censoring time, this paper gives approximation to the distribution of parameter estimation using saddlepoint approximation.
本文基于指数分布不同定时截尾数据,利用鞍点逼近法给出参数估计的概率分布的近似公式,进而给出可靠度的近似置信下限,并通过数值模拟及实例计算说明本文方法的可行性。
2) saddlepoint approximations
鞍点逼近
1.
Saddlepoint approximations are powerful tools for obtaining accurate expressions for densities and distribution functions.
鞍点逼近法是一个非常有效的逼近工具,它可以获得密度函数和分布函数的逼近函数。
3) saddle point approximation algorithm
鞍点逼近算法
1.
In this paper, the convergent result of the saddle point approximation algorithm is revised.
修正了文献［１］所提的“鞍点逼近算法”的收敛性结论。
4) saddle-point approximation
鞍点近似
1.
A non-Gaussian approximation method,based on the moment generation function of the decision statistic and saddle-point approximation,is introduced to evaluate the statistic characteristics of multi-access interference,shot noise and thermal noise and crosscorrelation.
为了精确分析相位编码光码分多址系统误码率性能,提出了一种基于判决变量的矩母函数和鞍点近似的非高斯近似方法,该方法能够精确考虑多址干扰、散粒噪声、热噪声各自的统计特性和相互间的非加性关系。
2.
The impact of multiple access interference(MAI),ISI and self beat noise on system performance is analyzed by using saddle-point approximation and the bit error rate(BER) expression of the system is presented.
利用鞍点近似法分析了多址干扰(MAI)、码间串扰、自差拍等噪声对系统性能的影响,给出了系统误码率公式。
3.
Compute VaR taking advantage of saddle-point approximation and make VaR to be the function of asset positions under the frame of CreditRisk+ and find the optimal solution for the model by genetic algorithm.
本文在CreditRisk+框架下,提出一个在不允许卖空条件下,不需对VaR的性质做出前提假定的新解法:将鞍点近似法用于计算VaR,在资产头寸与VaR之间建立起函数关系,采用遗传算法寻找模型的近似最优解。
5) Saddlepoint Approximation
鞍点近似
1.
Aimed at this purpose a method to conduct approximate confidence intervals about thescale parameter of Logistic response distribution is presented by used binary response dataand the saddlepoint approximation.
为此,本文基于 Logistic 响应分布,在二元响应数据下,应用鞍点近似方法构造了刻度参数的近似置信区间,并进行了模拟研究。
6) pointwise approximation
点态逼近
1.
A kind of weighted pointwise approximation direct and inverse theorem of unbounded continuous functions;
无界函数加权的点态逼近等价定理
2.
Pointwise Approximation on Baskakov Type Operators;
Baskakov型算子的点态逼近
3.
The purpose is to use the moduli of smoothness ωrφλ(f,t)(0≤λ≤1),to get the results of pointwise approximation equivalent theorem for the combinations of modified Baskakov-Durrmeyer operators.
利用ωrφλ(f,t)(0≤λ≤1),研究了修正的Baskakov型算子线性组合的点态逼近等价定理,得到一般性结果。
补充资料：鞍点
分子式：
CAS号：
性质：数学上同时具备极大与极小性质的点。应用于三维势能面及裂变核势能曲面上，与反应坐标相垂直的方向上过渡态位于势能的最低点，发生对称伸缩振动。在沿反应坐标方向上过渡态位于势能的最高点，发生不对称伸缩振动。过渡态在势能面所处的这一点即势能面的鞍点。
CAS号：
性质：数学上同时具备极大与极小性质的点。应用于三维势能面及裂变核势能曲面上，与反应坐标相垂直的方向上过渡态位于势能的最低点，发生对称伸缩振动。在沿反应坐标方向上过渡态位于势能的最高点，发生不对称伸缩振动。过渡态在势能面所处的这一点即势能面的鞍点。
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参考词条