极端值
- 网络outlier;extreme values;extreme
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结果当应变量非正态分布时,直接应用现有回归树算法不能得出正确的分析结论;而当存在极端值时这一问题更为严重。
Results Default arithmetic of regression tree can 't be used directly under the condition of non-normal distribution , existence of outlier would make the problem more severity .
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然而,经典主成分分析它对极端值及缺失值非常的敏感,而极端值与缺失数据会带来残缺或错误的分析结果。
However , it is well known that PCA is sensitive to outliers and missing data , but it maybe get deformity and error result .
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基于POT方法的商业银行操作风险极端值估计
Estimating Extreme Values of Operational Risk for Commercial Banks via Peak over Threshold Method
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Banach空间单位球的均匀度的极端值
The extreme value of thh uniform degree of unit ball of Banach space
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基于极端值理论(EVT)的金融风险度量
Calculate the Financial Risk According to Extreme Value Theory
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使用围绕极端值的三分聚类算法和Apriori算法对重庆地区的气象资料进行了深入挖掘,详尽地展示了挖掘的过程,得出了一系列极有意义的挖掘成果。
The tri-dividing clustering algorithm around extreme values and Apriori algorithm are used to mine the meteorological data in Chongqing city and the concrete mining process has been shown . A series of mining results are of great importance .
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本文通过对D-CAPM的改进,首先:加入惩罚因子,用来反映极端值的影响;其次,考虑了上方收益波动的影响。
We introduced D-CAPM and improve it in this paper . First of all , we add punishment factor to it which used to reflect the influence of extremes . Secondly , considering up-side receipts .
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人体静电极端值的分析研究
A study on the maximum static electricity on human body
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气温极端值的选取与分析
Analysis of Surface Air Temperature Extremum Extreme Costumes
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极端值分析法在汽车耐久性试验中的应用
The Application of the Concept of Extreme Value Analysis in Endurance Testing of Vehicles
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极端值影响下总体均值估计量的调整按人口平均计算的国民生产总值;人均国民生产总值
The Adjustment of Mean Estimation with Extreme Value ; per capita gross national product
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将极端值分布函数用于股票最高价与最低价的描述。
The authors introduce extreme value distribution and describe the high price and low price by it .
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这可以是使用一个移动平均量或者使用其他基于权重的模式来中和极端值。
This can be the use of a moving average or other weight-based scheme that moderates extreme values .
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其次为缩小极端值的影响提出了基于信息熵的威胁指标权重算法;
The algorithm for the weight of each threat criteria is proposed by information entropy to reduce the effect of the extreme numerical value .
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本文在传统统计方法的基础上进行了算法的改进,有效的解决了数据中的极端值问题。
In this paper , the traditional statistical methods based on the algorithm , an effective solution to the data in the extreme value problem .
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剔除掉无效数据和极端值,再对实验数据做统计分析,包括描述性统计、T检验与回归分析等,最后报告实验数据结果,得出本文的研究结论。
Weed out invalid data and extreme values , and then do statistical analyses of experimental data including summary statistics and descriptive statistics , T test and regression analysis .
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另外,平均气候变化以后,气候极端值的变化将更加剧烈,因此,异常天气灾害对农业的危害程度有可能增加。
Moreover , extreme climatic factors will be in he more acute variation as climate averages change , which adds to the possibility of adverse impacts of abnormal weather events on crop growth and development .
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本文应用极端值分析法确定对汽车试验场耐久性试验具有统计代表性的最少试验场行驶循环次数。
This paper applies the concept of extreme value analysis to determine the minimum number of driving cycles on proving ground , which can statistically represent the endurance testing of a vehicle on the proving ground .
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一般而言,经理人的权力越大,则其在公司日常经营的决策所受到的干扰就越小,公司决策就越有可能出现极端值,因此公司业绩的波动率就应该越大。
In general , the more power a CEO has , the less interference he or she will face in the daily management decisions , then the more possible for the company to have extreme performance value .
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通过讨论温度平均值与极端值变化之间的关系,发现粤北地区的平均温度上升使得极端最低温度显著上升;
By studying relationship between the extreme and the mean and variability of daily temperatures , the results reveal that in the north of Guangdong the increase of mean value cause the increase of extreme low temperature ;
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至第14天时,敏感种群各类生化指标变化均达到极端值。因此,氧化胁迫产生的抗性可能是日本看麦娘对高效氟吡甲禾灵抗性的机理之一。
After 14 days , all kinds of biochemical indicators of sensitive A. japonicus reached the extreme value . Therefore , resistance due to oxidative stress may be one of the mechanisms of resistance in A. japonicus .
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也有学生将平均数理解为中等水平,认为超过平均数就是超过一半,忽略了平均数易受极端值的影响这一性质。
Some of the students consider the Average as the middle level , and believe that more than the Average means over the majority , ignoring the nature of " extreme values influence of the Average " . 4 .
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结果表明:(1)日平均气温、日平均地温、日较差、日蒸发量、日平均风速、大气湿度等因子在达到任一极端值时,均不能使核桃幼树抽条;
The results obtained showed that ( 1 ) walnut tree could not sprout when some factors such as average day temperature , average day ground temperature , average day evaporation , average day wind velocity and atmospheric humidity changed greatly ;
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求解对称矩阵极端特征值的Chebyshev-PBL方法
Chebyshev - PBL Method for Solving Extreme Eignvalues of Symmetric Matrix
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正常生理性内源物质基本不干扰测定,外源性药物除极端高值外亦不干扰。
Within normal physiological range , endogenous substrate does not interfere with the determination , and exogenous drugs do not interfere except extreme high values .
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各区域的极端温度值时间变化存在较大差异,但是周期分析显示,各区域极端温度值的年代际周期振荡具有全省一致性。
There are distinct differences of the trends of extreme temperature variation between different regions , but the periodic variation analysis show that the inter-decadal variations are consistent .
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由于我国地域广阔,每年东北和西北地区极端最低气温平均值一般在-40℃左右。
As a vast country , average annual extreme minimum temperature is generally about - 40 ℃ in Northeast and Northwest China .
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利用福建省66个台站所处的纬度、海拔高度、离海距和观测站与周围的相对高度差等地理因子建立推算年度极端最低气温平均值的模式。
Based on the geographic location data of 66 meteorological stations in Fujian Province , including latitude (Φ), elevation ( H ), distances ( S ) from seaside to station , and relative altitude (Δ h ), an estimation model of annual minimum temperature is developed .
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极端温度事件的趋势系数空间分布与相应极端温度值的趋势系数空间分布具有很好的对应关系。
The spatial distributions of the frequency trend-coefficients of extreme temperature events have opposite relation with that of the extreme temperatures .