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1)  optimal sampling frequency
最优抽样频率
1.
The study of the optimal sampling frequency is very important in high-frequency financial data.
首先综述了国内外对最优抽样频率的研究成果,并对各种方法的利弊进行了分析比较;然后结合目前我国股市金融高频数据的特点,提出了一种简便易行的最优抽样频率确定方法,并且基于"已实现"双幂次变差和赋权"已实现"波动估计量进行了研究,分别给出了2个估计量的偏差;最后用深证成指的高频数据进行了实证研究。
2)  optimal sampling
最优抽样
3)  sampling frequency
抽样频率
1.
In an effort to reduce the difficulty of designing filters,the relations among the anti-aliasing filter′s roll-off rate,rank,sampling frequency and the recognition of analog-to-digital converter are discussed and analysed in detail,then a reasonable method to choose and design these three ones are presented including anti-aliasing filter,sampling frequency and A/D converter.
为有效降低滤波器设计的难度,在详细分析并讨论了抗混叠滤波器的陡度、阶数与信号抽样频率以及A/D转换器的分辨率之间的内在关系后,提出了抗混叠滤波器、抽样频率和A/D转换器三者之间合理权衡设计的方法。
4)  frequency sampling
频率抽样
1.
In this paper a new application of genetic algorithm (GA) in FIR filter design with frequency sampling method is presented.
本文介绍了遗传算法在FIR滤波器设计———频率抽样法中的应用 。
5)  optimal sample size
最优抽样量
1.
By two-stage procedures,the paper designs a Tukey two-stage simultane- ous confidence interval of prescribed reliability (confidence level) and prescribed precision (the width of the interval) and provides the optimal sample size of the first stage by numerical computations.
且利用数值计算的方法给出了第一阶段最优抽样量。
2.
A fixed-width(less than 1/2) confidence interval whose confidence level 1-α is more than 1-ν for the mean λ of a Poisson distribution P(λ) by two-stage procedures is introduced, and the optimal sample size of the first stage by numerical computations is provided.
提出利用二阶段方法得到Poisson分布参数λ的一个置信水平1-α≥1-ν时的具有任意固定宽度L(<1/2)的区间估计,并通过数值计算得到第一阶段的最优抽样量。
6)  optimum sampling fraction
最优抽样比
补充资料:最优抽样比
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性质:抽样误差最小而抽样经费开支最省的抽取比。抽样误差随抽样数的增加而减小,而经费开支随抽样数增加而增加,两者是相互制约的。在实施抽样时,通常很难同时满足这两个条件,合理的做法是,在给定的经费条件下使抽样误差最小,或者,在给定抽样误差的条件下使抽样费用最省。

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