查询词典 absolute deviation

Based on the absolute deviation, a new risk function ω〓 is proposed and an analytical solution for the single period model is derived.

提出了一个新的风险控制函数ω〓，该函数是将所有资产的绝对偏差的平均值作为风险的度量，并给出其单阶段的投资模型的解析解。

Two fund separation is found in mean absolute deviation portfolio choice model.

实证分析还表明，绝对离差模型中有近似的两基金分离现象存在。

In this paper, based on the approach of a tra de-off between mean and absolute deviation, we investigate the portfolio perfo r mances of 169 A stocks in Shanghai stock market.

本文基于均值-绝对偏差的折中方法探讨了上海股票市场169种股票的投资组合分析，得到了一些有益的启示和结论。

The least absolute deviation of the random censored data nonlinear regression model ［J］.

随机删失数据非线性回归模型的最小一乘估计［J］。

Matlab norm to achieve a optimized code to achieve the smallest absolute deviation algorithm.

详细说明： matlab实现的1范数优化代码，实现绝对值偏差最小的算法。

The results were correlated as the van der walls type and polynominal functions of temperature, and the average absolute deviation were 0.0776 and 0.0270mN·m~(-1), respectively.

利用两种温度函数对表面张力的数据进行了拟合，拟合的平均偏差分别为0.0776和0.0270mN·m~(-1)。

Fuzzy Expected Rate of Return ; Portfolio Selection Model ; Fuzzy Absolute Deviation ; Value of Fuzzy Number ; Dominance Criteria

模糊收益率；投资组合模型；模糊绝对偏差；模糊数的绝对值；占优准则

Quantile regression models are important statistical models, which are more powerful than least square regression and least absolute deviation regression in statistical analysis, and can supply much more attractive inference results for the datasets.

分位点回归模型是一种重要的统计模型，它比最小二乘回归和LAD回归具有更强的统计分析能力，能给数据集提供更加丰富的统计推断结果。

Appling least absolute deviation to calculate variable parameter of differential equation,robust grey model RGM(1,1) has been set up and used to forecast the settlement tendency of building.

将最小一乘法应用于微分方程变量参数求解，建立稳健灰色模型RGM(1，1)，并将其应用于建筑物沉降预报和比较。

In Chapter 2, combining the semi-absolute deviation risk function with a minimax principle, we introduce a new risk function.

第二章结合半绝对偏差风险函数和极大极小原则的思想，提出了一种新的投资风险度量函数。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。