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   maximum likelihood ( 的翻译结果: 查询用时:0.219秒
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maximum likelihood
相关语句
  最大似然(
     Maximum likelihood (ML), modified ML, CLEAN and RELAX algorithm are given.
     并提出了迭代最大似然 ( ML )估计算法、CLEAN算法和 RELAX算法以及改进的迭代 ML估计算法。
短句来源
     2 After presenting the image models, characters and existing methods of blind image deconvolution, Iterative Blind Deconvolution(IBD) algorithm Maximum Likelihood (ML) algorithm, Richard-Lucy (RL) algorithm, Nonnegativity and Support Constrants Recursive Inverse Filtering (NAS-RIF) algorithm are analyzed and realized, then based on a lot of experiments the algorithms are compared with each other.
     2、介绍了图像盲解卷积的数学模型、性质及现有的方法之后,深入分析并实现了迭代盲解卷积(Iterative Blind Deconvolution, IBD)方法、最大似然(Maximum Likelihood, ML)方法、Richard-Lucy(RL)方法、具有非负性和支持域约束条件的递归逆滤波(Nonnegativity and Support Constrants Recursive Inverse Filtering, NAS-RIF)算法,做了大量试验,比较了各类算法的性能。
短句来源
     Theoretical analysis and experimental result indicates that the transformation can reduce the miss recognition rate up to 8.6%, compared to Maximum Likelihood (ML) transformation which is commonly used in GMM.
     理论推导和实验结果表明,与GMM常用的最大似然(ML)变换相比,该变换能使系统降低误识率达8.6%,因此,证明了该变换能够改善基于GMM的与文本无关说话人识别系统的识别率。
短句来源
     A rapid timing acquisition algorithm,which is based on the maximum likelihood(ML) criterion,is developed for UWB(ultra-wideband) communications based on designed training symbols.
     针对超宽带(ultra-wideband,UWB)信号的具体特征,利用巴克码的相关特性,设计了一种结构简单的训练序列,在此基础上建立了基于最大似然(ML)准则的UWB同步捕获算法。
短句来源
     The estimator for integer frequency offset estimation is derived based on the maximum likelihood (ML) estimation theory.
     利用一个OFDM码元中各子载波上数据符号之间的差分关系和最大似然(ML)估计理论,导出了该整数倍频偏的ML估计器的估计公式.
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  “maximum likelihood (”译为未确定词的双语例句
     Vrarance and covarance components were estimated by a restricted maximum likelihood (REML)approach for the 6 traits, and heritability estimates of which were 0.24, 0.215, 0.29,0.48 and 0.36 resp.
     用约束最大似然估计法(REML:Restricted maximum likelihood)估计方差组分,得到以上6性状的遗传力分别为0.24,0.215,0.29,0.48和0.36。
短句来源
     Maximum Likelihood (ML) frame synchronization estimator and its corresponding simplified estimators are presented.
     论文设计了一种采用最大似然估计(ML)帧同步估计器和相应的简化估计器。
     The Maximum likelihood(ML) decoding of the proposed codes can be implemented by the sphere decoder at a moderate complexity and the complexity of the decoding algorithm is independent of signal constellation size.
     系统采用了球型解码器对DSF码实施最大似然解码,它的解码复杂性是中等的,并且,解码算法的复杂性与信号星座的维数无关。 码复杂性是中等的,并且,解码算法的复杂性与信号星座的维数无关。
短句来源
     The theory analysis and result of experiment indicates that the transformation can reduce the error recognition ratio to 2.0% ,comparing to Maximum Likelihood(ML) transformation which is mostly used in GMM.
     理论分析和实验结果表明,与GMM常用的最大似然穴ML雪变换相比,该变换能使系统提高辨识率达2.0%,因此,证明了该变换能够改善基于GMM的语种辨识系统的识别率。
短句来源
     By comparing the CD-RELAX with the Alternating Projection of the Maximum Likelihood(ML-AP) , the opinion of the exact fitting and the non-exact fitting was proposed .
     通过与最大似然(ML)算法的交替投影(AP)解法的比较,提出了恰当(Exact-fitting)拟合与非恰当(Nonexact-fitting)拟合的概念。
短句来源
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  相似匹配句对
     On Generalized Maximum Likelihood Estimation
     浅论“广义”最大似然估计
短句来源
     Totally Maximum Likelihood Estimation
     完全极大似然估计
短句来源
     is maximum.
     的影响极大。
短句来源
     Two kinds of ordinary Maximum Likelihood (M. L. )
     对常用的M. L.
短句来源
     The Maximum Likelihood Estimation for MA(q)-Model Parameters
     MA(q)-模型参数的极大似然估计
短句来源
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  maximum likelihood
The relative efficiencies of moment estimators as compared with the maximum likelihood and the stepwise estimators are computed.
      
Generalized Maximum Likelihood Algorithm for Direction-of-Arrival Estimation of Coherent Sources
      
The generalized maximum likelihood (GML) algorithm for direction-of-arrival estimation is proposed.
      
Secondly, the comparison between the GML algorithm and the conventional deterministic maximum likelihood (DML) algorithm is presented based on their respective geometrical interpretation.
      
In this article, we developed a new algorithm for eigenspace-based adaptation restricting eigenvoices in clustered subspaces, and maximum likelihood (ML) criterion was replaced with maximum aposteriori (MAP) criterion for better parameter estimation.
      
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The non-linear estimation of time-varying parameters of singals in the presence of noise is discussed. A concept of instantaneous maximum likelihood estimation is presented and is shown to be asymptotically sufficient. A new approach of optimum estimation has been found by which the diffcult problem of non-linear estimation of time-varying parameters of signals is simplified as first finding the instantaneous maximum likelihood estimation and then its optimum processing.The apparatus used to realize...

The non-linear estimation of time-varying parameters of singals in the presence of noise is discussed. A concept of instantaneous maximum likelihood estimation is presented and is shown to be asymptotically sufficient. A new approach of optimum estimation has been found by which the diffcult problem of non-linear estimation of time-varying parameters of signals is simplified as first finding the instantaneous maximum likelihood estimation and then its optimum processing.The apparatus used to realize the instantaneous maximum likelihood estimation is defined as optimum demodulator and its general configuration is given. The application of the above theory is described with the phase-modulated signal used as an example. Finally, the results obtained in this paper are compared with those of D. C. Youla and D. L. Snyder.

本文研究了在噪声中信号时变参数的非线性估计,提出了瞬时最大似然估计的概念,证明了这个瞬时最大似然估计是渐近充份的,给出了最佳估计的新途径;其实质是把信号时变参数非线性估计这样一个难题,分解为求出瞬时最大似然估计和对瞬时最大似然估计的最佳处理。文中定义实现瞬时最大似然估计的装置为最佳差调器,给出了它的一般构造。 附录比较了本文和D.C.Youla及D.L.Snyder等文的结果。

It is agreed by most statisticians that in determing the LD_x of a drug the probir method would give a satisfactory solution. However, the computation required for probit analysis with maximum likelihood method is tedious and time consuming. Research workers are clearly justified in pressing statisticians to invent simpler methods of analysis.This article presents an alternative method of probit analysis for determing LD_x, the "weighted approximation method". This is much simpler than the method of maximum...

It is agreed by most statisticians that in determing the LD_x of a drug the probir method would give a satisfactory solution. However, the computation required for probit analysis with maximum likelihood method is tedious and time consuming. Research workers are clearly justified in pressing statisticians to invent simpler methods of analysis.This article presents an alternative method of probit analysis for determing LD_x, the "weighted approximation method". This is much simpler than the method of maximum likelihood and is a good approximation to the latter.Let x_1, x_2, …, x_k be the k logarithm doses with equally spaced I; p_1, P_2,…, P_k, the corresponding percentage of positive responses; y_1, y_2,…, y_k, the probits and w_1, w_2,…, w_k, the weights of corresponding probits, in which y and w may be obtained from the tables listed in the text.With the analysis of weighted linear regression, the slope of weighted regression lineb= CA/IB (1) then and the standard deviation of M (2)there C=1 for an odd number of doses, C=2 for an even number of doses, the calculation of A and B are tabulated as follows:With polynomial coefficients λ of linear regression, formulae (1) and (2) may be for an arbitrary number of doses.An example is described which describes that the weighted approximation method has a negligible error, while the simplified probit method already recommended by Gu Hanyi has an unnegligible error as compared with the maximum likelihood method.A criticism of "simplified probit method" is presented in the appendix.

求LD_x的最大或然性方法被公认为是最佳方法,但由于计算繁琐而费时往往迫使药理及生物检定工作者要求在不失其精确度的条件下,用简便的方法代替。本文提出用加权近似法求LD_x,并有一套定型的公式以利计算。它略去最大或然性法的叠代过程,使计算大为简化。 该法对最大或然性法是极好的近似,为了说明两者的近似程度,用加权近似法,最大或然性法以及顾汉颐氏提出的简化概率单位法作比较。 最后,文章附录对简化概率单位法的不足提出评论。

Based upon the method of statistical testing,this paper analyses and compares the methods of moments, maximum likelihood and curve-fitting in the case of Pearson type Ⅲ distribution. For the curve-fitting method, a comprehensive comparative analysis is made on seven criteria of curve fitting and mainly on the two of them-the least squares criterion φ1 andthe least absolute-values criterion φ2, as well as on the various plotting position formulas.Moreover, the role of historical flood is also examined....

Based upon the method of statistical testing,this paper analyses and compares the methods of moments, maximum likelihood and curve-fitting in the case of Pearson type Ⅲ distribution. For the curve-fitting method, a comprehensive comparative analysis is made on seven criteria of curve fitting and mainly on the two of them-the least squares criterion φ1 andthe least absolute-values criterion φ2, as well as on the various plotting position formulas.Moreover, the role of historical flood is also examined. The results of calculation indicate that the quantity Xp derived from the moment method has a much smaller expected value EXP than the true value xp?of the population and that this is on the unsafe side. The maximum likelihood method yields somewhat better result but it cannot be accepted as a universal method because it yields no solution to Pearson Ⅲ .curve when Cs≥2. For the curve fitting method, it is found that the result is substantially affected by the criterion used for curve fitting.In general, φ2 criterion associated with Weibull formula ( abbr. in φ2-W ) may give slightly greater EXP than xpo and smaller root-mean-square error σXp. Consequently, φ2-W curve-fitting method proves to be the better one among all the methods available. The use of historical flood would usually increase EXP and decrease σXp and is, therefore, an important means to improve the computational results.

本文采用统计试验方法,对于P-Ⅲ型曲线分析对比了矩法、极大似然法和适线法.在适线法中分析比较了七种不同的适线准则,并着重比较了其中的平方准则φ_1和绝对值准则φ_2,同时也分析比较了各种不同的经验频率公式.另外,还研究了历史洪水的作用.大量计算结果表明:矩法所得的设计值X_p,其期望值EX_p比总体真值x_p~0偏小较多,不够安全;极大似然法虽具有较好性质,但由于P-Ⅲ曲线在C≥2时似然方程无解,因此无法普遍使用;在适线法中发现适线准则对结果的影响很大,φ_2准则配合期望值公式(简记为φ_2-W)一般能使EX_p,稍大于x_p~0,较小(与矩法接近),因此φ_2-W适线法是较好的一种估计方法,应予采用.考虑历史洪水一般使EX_p增大、σx_p降低,因此是提高计算成果质量的重要措施.给出了历史洪水折算长度的参照数值,计算了历史洪水误差的影响.并修正了计算设计洪水安全改正值用的B值图.

 
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