非参数估计

The cross-high-order-cumulant such as the cross-fourth-order cumulant is firstly proposed to measure the signal and for the first time prove that the CHOC can control the non-relevant noises and Gaussian noises. And based on the cross-high-order spectral Yule-Walker equations, the sinusoidal signal matrix is decomposed by the way of singular value decomposition method.

摘 要：本文以互四阶累积量为依据，首次证明了互高阶累积量可以有效地抑制非相关噪声和高斯噪声；并在建立互高阶累积量的Yule-Walker方程的基础上，通过该矩阵的奇异值分解，建立了信号矢量空间与噪声矢量空间；首次提出了混合噪声背景下正弦参数估计的互高阶谱Pisarenko方法。

First, a non-parametric density estimate method based on kernel function is adopted to estimate the statistic distribution of the SAR images, and then, the SAR images is segmented with Markovian contexture by maximizing a MAP estimator, taking the former estimation as its likelihood term.

该算法首先采用基于核函数的非参数方法估计SAR图像的统计分布，然后将此统计量作为图像分割的似然函数，利用马尔可夫上下文约束进行SAR图像分割。

The characteristic of higher-order cumulant is insensitive to Gaussian colored noise.

对故障信号进行傅立叶变换是我们常用的非参数化功率谱估计方法。

Research interests encompass sampling, estimation, semi/non-parametric methods, multivariate statistics, data mining and complex data analysis.

研究兴趣包括采样，估计，半/非参数方法，多元统计，数据挖掘和分析复杂的数据。

Nonparametric estimation in the survival analysis were used to estimate the retention probability of customers at every transaction period,and the expected duration of the customer lifetime,i.

采用生存分析中的非参数方法估计客户在其每个交易期内的维系概率、客户的期望寿命和客户终生价值。

In this paper, a new image de-noising method is proposed by using the threshold method based on nonparametric adaptive estimation which is presented by Birge-Massart in Ridgelet domain.

该文在有限Ridgelet域中，结合Birge-Massart等提出的非参数自适应估计理论，提出一种新的二维图像去噪方法。

A nonparametric kernel estimation of the flood frequency with historic information is presented in this paper. The limitation in assuming a distribution type is overcome.

本文提出了在有历史洪水情况下洪水频率的非参数核估计方法，克服了现行方法假定分布型式的局限。

AIDS Model ; Panel Data ; Nonparametric Local Linear Estimation ; Elasticity Analysis ; The Pearl River Delta

AIDS模型；面板数据；非参数局部线性估计；弹性分析；珠三角

Window width ; Diameter distribution ; Kernel density estimation ; Nonparametric statistical model ; Stand table

窗宽；直径分布；核密度估计；非参数统计模型；林分表

Considering the low effective of GARCH model for high frequency data,the nonparametric method is adopted to estimate the value at risk of high frequency data.

文章在GARCH模型对高频数据低效的情况下，从非参数的角度给出风险价值一个相合估计量，这个估计量不依赖于总体分布。

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。