查询词典 probability

We make the following assumption for When 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of Least squares estimate have been discussed in many documents. Considered 2 is nonnegative definite matrix, this thesis derives Best linear unbiased Estimate of parameter matrix B and estimable parameter function KBL under the meaning of matrix nonnegative definite and the property of maximum probability of BLUE is investigated.

当∑＞0时，众多文献讨论了回归系数阵的各种估计及LSE的有效性，本文考虑了当∑≥0的情形，给出了回归系数阵B及其可估参数函数KBL的在矩阵非负定意义下的最优估计，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与BLUE的偏差估计，定义了LSE相对于BLUE的一个相对效率，并给出了它的界。

The probability of high demand is estimated as 40%, and of low demand as 60%.

高需求概率估计为40％，低需求概率估计为60％。

The uncertainties of the parameter estimation are analysed in terms of the posterior probability distributions of inversion results.

最后利用参数的后验概率分析反演结果的不确定性。

Results indicate that the ensemble precipitation probability forecasts made by the three methods above-mentioned all can give accurate estimation of center and region of the precipitation, and the "Rank" is superior to the "Average" and "Correlation" for performing better in forecasting the areas, intensity and boundary of precipitation but the other two expand improper areas.

结果表明：用上述3种方法制作的多模式短期集合概率预报都能对降水落区及中心做出较准确的预报，但平均法和相关法易使降水落区虚假放大，Rank法则能较好地刻画降水落区边界及强度，其概率预报效果优于平均法和相关法结果。

GPS precise positioning, baseline precision, general normal equation, decorrelated and admissible integer transformation, ambiguity integer solution, success rate, admissible integer estimation, pull-in region, probability density function

GPS 精密定位，基线精度，通用法方程式，降相关的可容许整数变换，模糊度的整数角，成功率，可容许整数估计，归整域，概率密度

Eugenic Section Doctor think it is false positive, the impact on the probability of a small BB.

优生科的医生认为是假阳性，对BB的影响概率很小。

A way to calculate the failure probability of basic event in fuze fault tree［J］.

引信故障树底事件失效概率的计算方法［J］。

Submarine structure ; risk assessment ; probability of accidents ; fuzzy event tree analysis

潜艇结构；风险分析；事故概率；模糊事件树

Event tree method is the basic technology of safety risk analysis, but the credi bility of analysis mainly depends on the precision of failure probability parame ters'o estimate of control systems.

事件树方法是安全风险分析的基本技术，其分析结果的可信度在很大程度上取决于控制系统失效概率估计的精度。

Secondly, the statistical models are used to studied the survive probability of SHE with excitation energy.

并对Γ〓/Γ〓与激发能和鞍点能级密度参数的关系进行了讨论。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。