查询词典 variance ratio

The method has good stability and low estimation variance even if the signal-to-noise ratio is quite low.

利用旋转不变技术的参数估计方法[3-5]出现于多信号分类法MUS

Under current futures prices are unbiased, different hedge ratios are the same as the minimum variance hedge ratio.

在期货价格趋势是公正的情况之下，在不同定义的风险指标的期货避险值是同等於风险指标在变异数情况最小的避险值。

To aim at parameter estimation of signal to noise ratio and high variance in low SNR based on time frequency distribution, this paper proposed a novel algorithm based on multimodal particle swarm optimization.

针对基于时频分布的参数估计存在信噪比阈值和低信噪比下方差大的问题，提出了一种基于多峰优化粒子群算法的跳频信号参数估计新算法。

The test result shows that we got the optimum emulsified diesel oil of definite mixing ratio by variance analysis of power smoke and consume oil.

以发动机功率、耗油率和烟度的综合评价值为指标进行方差分析，优选最佳的乳化油配比方案。

The model considered availability of multiple machines of the same type, processing times and batch information, and the objective function was to minimize the statistical variance of the ratio of loading to capacity in each cell.

模型中考虑了同类设备的可重用性、工时信息和批量信息，目标函数为最小化各单元之间的负荷能力比。

The analysis results show that the relationship of the phase plate's Fourier spectral T2 and the far field distribution variance is in direct ratio.

利用数值模拟计算了随机生成的两个波前分别通过两个位相屏后的远场分布，模拟结果证实了位相屏用于随机相位畸变激光束匀滑的可行性，并显示了匀滑效果。

A new feature, the variance of low-band energy ratio, is also introduced, which produces large improvements in classification accuracy at low SNR Performance of the proposed system is evaluated for different SNR.

考察了系统在不同的信噪比环境下的分类性能。

The effect of important factors on beer buffer capacity and pH, meanwhile, the optimum proportion of buffer substances at the maximum beer buffer capacity can be determined by means of orthogonal experiment with many targets and analysis of variance for correlation ratio.

通过多指标的正交实验及方差分析，确定了影响啤酒缓冲容量和pH值的主要因素以及缓冲容量最大时缓冲组分的最佳比例。

By using the nonlinear PCA, the obtained principal synthetic components are used to replace the original index and the synthetic evaluation value is gained by computing linear sum of the variance contributing ratio which is used as the weight.

利用该方法对监测点的电能质量进行综合评估，用得到的综合主成分指标代替原来较多的评估指标，将主成分的方差贡献率作为权重，以主成分的线性加权值作为综合评估的结果。

The use of the variance steering ratio can not only raise the steering stability under the high vehicle speed, but also reduce the uncomfortable feeling and steering burden. This is helpful for the subjective evaluation of four-wheel steering vehicle.

采用变转向比方式的四轮转向车辆，不仅能够提高车辆高速时的操纵稳定性能，还能减少驾驶员转向时的不适应和负担，改善对四轮转向车辆操纵稳定性的主观评价。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。